diff --git a/docs/api_refs/typedoc.json b/docs/api_refs/typedoc.json
index c03de0c396a3..2e263c3c195e 100644
--- a/docs/api_refs/typedoc.json
+++ b/docs/api_refs/typedoc.json
@@ -175,6 +175,7 @@
     "./langchain/src/document_loaders/fs/epub.ts",
     "./langchain/src/document_loaders/fs/csv.ts",
     "./langchain/src/document_loaders/fs/notion.ts",
+    "./langchain/src/document_loaders/fs/obsidian.ts",
     "./langchain/src/document_loaders/fs/unstructured.ts",
     "./langchain/src/document_loaders/fs/openai_whisper_audio.ts",
     "./langchain/src/document_loaders/fs/pptx.ts",
diff --git a/examples/src/document_loaders/example_data/obsidian/bad_frontmatter.md b/examples/src/document_loaders/example_data/obsidian/bad_frontmatter.md
new file mode 100644
index 000000000000..57698653173d
--- /dev/null
+++ b/examples/src/document_loaders/example_data/obsidian/bad_frontmatter.md
@@ -0,0 +1,9 @@
+---
+anArray:
+ one
+- two
+- three
+tags: 'onetag', 'twotag' ]
+---
+
+A document with frontmatter that isn't valid.
\ No newline at end of file
diff --git a/examples/src/document_loaders/example_data/obsidian/frontmatter.md b/examples/src/document_loaders/example_data/obsidian/frontmatter.md
new file mode 100644
index 000000000000..80396d268f94
--- /dev/null
+++ b/examples/src/document_loaders/example_data/obsidian/frontmatter.md
@@ -0,0 +1,5 @@
+---
+tags: journal/entry, obsidian
+---
+
+No other content than the frontmatter.
\ No newline at end of file
diff --git a/examples/src/document_loaders/example_data/obsidian/no_frontmatter.md b/examples/src/document_loaders/example_data/obsidian/no_frontmatter.md
new file mode 100644
index 000000000000..74c2405506e2
--- /dev/null
+++ b/examples/src/document_loaders/example_data/obsidian/no_frontmatter.md
@@ -0,0 +1,13 @@
+### Description
+#recipes #dessert #cookies 
+
+A document with HR elements that might trip up a front matter parser:
+
+---
+
+### Ingredients
+
+-   3/4 cup (170g) **unsalted butter**, slightly softened to room temperature.
+-   1 and 1/2 cups (180g) **confectioners’ sugar**
+
+---
\ No newline at end of file
diff --git a/examples/src/document_loaders/example_data/obsidian/no_metadata.md b/examples/src/document_loaders/example_data/obsidian/no_metadata.md
new file mode 100644
index 000000000000..991d076e28da
--- /dev/null
+++ b/examples/src/document_loaders/example_data/obsidian/no_metadata.md
@@ -0,0 +1 @@
+A markdown document with no additional metadata.
\ No newline at end of file
diff --git a/examples/src/document_loaders/example_data/obsidian/tags_and_frontmatter.md b/examples/src/document_loaders/example_data/obsidian/tags_and_frontmatter.md
new file mode 100644
index 000000000000..cb373d396806
--- /dev/null
+++ b/examples/src/document_loaders/example_data/obsidian/tags_and_frontmatter.md
@@ -0,0 +1,35 @@
+---
+aFloat: 13.12345
+anInt: 15
+aBool: true
+aString: string value
+anArray:
+- one
+- two
+- three
+aDict:
+  dictId1: '58417'
+  dictId2: 1500
+tags: [ 'onetag', 'twotag' ]
+---
+
+# Tags
+
+ ()#notatag
+#12345
+ #read
+something #tagWithCases
+- #tag-with-dash
+#tag_with_underscore #tag/with/nesting
+
+# Dataview
+
+Here is some data in a [dataview1:: a value] line.
+Here is even more data in a (dataview2:: another value) line.
+dataview3:: more data
+notdataview4: this is not a field
+notdataview5: this is not a field
+
+# Text content
+
+https://example.com/blog/#not-a-tag
\ No newline at end of file
diff --git a/examples/src/document_loaders/obsidian.ts b/examples/src/document_loaders/obsidian.ts
new file mode 100644
index 000000000000..279618b0d75d
--- /dev/null
+++ b/examples/src/document_loaders/obsidian.ts
@@ -0,0 +1,11 @@
+import { ObsidianLoader } from "langchain/document_loaders/fs/obsidian";
+
+export const run = async () => {
+  const loader = new ObsidianLoader(
+    "src/document_loaders/example_data/obsidian"
+  );
+
+  const docs = await loader.load();
+
+  console.log({ docs });
+};
diff --git a/langchain/.gitignore b/langchain/.gitignore
index ca07764e707e..31314323dc27 100644
--- a/langchain/.gitignore
+++ b/langchain/.gitignore
@@ -469,6 +469,9 @@ document_loaders/fs/csv.d.ts
 document_loaders/fs/notion.cjs
 document_loaders/fs/notion.js
 document_loaders/fs/notion.d.ts
+document_loaders/fs/obsidian.cjs
+document_loaders/fs/obsidian.js
+document_loaders/fs/obsidian.d.ts
 document_loaders/fs/unstructured.cjs
 document_loaders/fs/unstructured.js
 document_loaders/fs/unstructured.d.ts
diff --git a/langchain/package.json b/langchain/package.json
index 3d5e56386799..07f6f31469e3 100644
--- a/langchain/package.json
+++ b/langchain/package.json
@@ -481,6 +481,9 @@
     "document_loaders/fs/notion.cjs",
     "document_loaders/fs/notion.js",
     "document_loaders/fs/notion.d.ts",
+    "document_loaders/fs/obsidian.cjs",
+    "document_loaders/fs/obsidian.js",
+    "document_loaders/fs/obsidian.d.ts",
     "document_loaders/fs/unstructured.cjs",
     "document_loaders/fs/unstructured.js",
     "document_loaders/fs/unstructured.d.ts",
@@ -2241,6 +2244,11 @@
       "import": "./document_loaders/fs/notion.js",
       "require": "./document_loaders/fs/notion.cjs"
     },
+    "./document_loaders/fs/obsidian": {
+      "types": "./document_loaders/fs/obsidian.d.ts",
+      "import": "./document_loaders/fs/obsidian.js",
+      "require": "./document_loaders/fs/obsidian.cjs"
+    },
     "./document_loaders/fs/unstructured": {
       "types": "./document_loaders/fs/unstructured.d.ts",
       "import": "./document_loaders/fs/unstructured.js",
diff --git a/langchain/scripts/create-entrypoints.js b/langchain/scripts/create-entrypoints.js
index a8cf7cfaa321..143a563d8f97 100644
--- a/langchain/scripts/create-entrypoints.js
+++ b/langchain/scripts/create-entrypoints.js
@@ -182,6 +182,7 @@ const entrypoints = {
   "document_loaders/fs/epub": "document_loaders/fs/epub",
   "document_loaders/fs/csv": "document_loaders/fs/csv",
   "document_loaders/fs/notion": "document_loaders/fs/notion",
+  "document_loaders/fs/obsidian": "document_loaders/fs/obsidian",
   "document_loaders/fs/unstructured": "document_loaders/fs/unstructured",
   "document_loaders/fs/openai_whisper_audio":
     "document_loaders/fs/openai_whisper_audio",
@@ -451,6 +452,7 @@ const requiresOptionalDependency = [
   "document_loaders/fs/epub",
   "document_loaders/fs/csv",
   "document_loaders/fs/notion",
+  "document_loaders/fs/obsidian",
   "document_loaders/fs/unstructured",
   "document_loaders/fs/openai_whisper_audio",
   "document_loaders/fs/pptx",
diff --git a/langchain/src/document_loaders/fs/obsidian.ts b/langchain/src/document_loaders/fs/obsidian.ts
new file mode 100644
index 000000000000..a2770cc7f877
--- /dev/null
+++ b/langchain/src/document_loaders/fs/obsidian.ts
@@ -0,0 +1,264 @@
+import type { basename as BasenameT } from "node:path";
+import type { readFile as ReadFileT, stat as StatT } from "node:fs/promises";
+import yaml from "js-yaml";
+import { getEnv } from "../../util/env.js";
+import { DirectoryLoader, UnknownHandling } from "./directory.js";
+import { BaseDocumentLoader } from "../base.js";
+import { Document } from "../../document.js";
+
+export type FrontMatter = {
+  title?: string;
+  description?: string;
+  tags?: string[] | string;
+  [key: string]: unknown;
+};
+
+export interface ObsidianFileLoaderOptions {
+  encoding?: BufferEncoding;
+  collectMetadata?: boolean;
+}
+
+/**
+ * Represents a loader for Obsidian markdown files. This loader extends the BaseDocumentLoader
+ * and provides functionality to parse and extract metadata, tags, and dataview fields from
+ * Obsidian markdown files.
+ */
+class ObsidianFileLoader extends BaseDocumentLoader {
+  private filePath: string;
+
+  private encoding: BufferEncoding;
+
+  private collectMetadata: boolean;
+
+  /**
+   * Initializes a new instance of the ObsidianFileLoader class.
+   * @param filePath The path to the Obsidian markdown file.
+   * @param encoding The character encoding to use when reading the file. Defaults to 'utf-8'.
+   * @param collectMetadata Determines whether metadata should be collected from the file. Defaults to true.
+   */
+  constructor(
+    filePath: string,
+    {
+      encoding = "utf-8",
+      collectMetadata = true,
+    }: ObsidianFileLoaderOptions = {}
+  ) {
+    super();
+    this.filePath = filePath;
+    this.encoding = encoding;
+    this.collectMetadata = collectMetadata;
+  }
+
+  private static FRONT_MATTER_REGEX = /^---\n(.*?)\n---\n/s;
+
+  /**
+   * Parses the YAML front matter from the given content string.
+   * @param content The string content of the markdown file.
+   * @returns An object representing the parsed front matter.
+   */
+  private parseFrontMatter(content: string): FrontMatter {
+    if (!this.collectMetadata) {
+      return {};
+    }
+
+    const match = content.match(ObsidianFileLoader.FRONT_MATTER_REGEX);
+    if (!match) {
+      return {};
+    }
+
+    try {
+      const frontMatter = yaml.load(match[1]) as FrontMatter;
+      if (frontMatter.tags && typeof frontMatter.tags === "string") {
+        frontMatter.tags = frontMatter.tags.split(", ");
+      }
+
+      return frontMatter;
+    } catch (e) {
+      console.warn("Encountered non-yaml frontmatter");
+      return {};
+    }
+  }
+
+  /**
+   * Removes YAML front matter from the given content string.
+   * @param content The string content of the markdown file.
+   * @returns The content string with the front matter removed.
+   */
+  private removeFrontMatter(content: string): string {
+    if (!this.collectMetadata) {
+      return content;
+    }
+
+    return content.replace(ObsidianFileLoader.FRONT_MATTER_REGEX, "");
+  }
+
+  private static TAG_REGEX = /(?:\s|^)#([a-zA-Z_][\w/-]*)/g;
+
+  /**
+   * Parses Obsidian-style tags from the given content string.
+   * @param content The string content of the markdown file.
+   * @returns A set of parsed tags.
+   */
+  private parseObsidianTags(content: string): Set<string> {
+    if (!this.collectMetadata) {
+      return new Set();
+    }
+
+    const matches = content.matchAll(ObsidianFileLoader.TAG_REGEX);
+    const tags = new Set<string>();
+    for (const match of matches) {
+      tags.add(match[1]);
+    }
+
+    return tags;
+  }
+
+  private static DATAVIEW_LINE_REGEX = /^\s*(\w+)::\s*(.*)$/gm;
+
+  private static DATAVIEW_INLINE_BRACKET_REGEX = /\[(\w+)::\s*(.*)\]/gm;
+
+  private static DATAVIEW_INLINE_PAREN_REGEX = /\((\w+)::\s*(.*)\)/gm;
+
+  /**
+   * Parses dataview fields from the given content string.
+   * @param content The string content of the markdown file.
+   * @returns A record object containing key-value pairs of dataview fields.
+   */
+  private parseObsidianDataviewFields(content: string): Record<string, string> {
+    if (!this.collectMetadata) {
+      return {};
+    }
+
+    const fields: Record<string, string> = {};
+    const lineMatches = content.matchAll(
+      ObsidianFileLoader.DATAVIEW_LINE_REGEX
+    );
+    for (const [, key, value] of lineMatches) {
+      fields[key] = value;
+    }
+
+    const bracketMatches = content.matchAll(
+      ObsidianFileLoader.DATAVIEW_INLINE_BRACKET_REGEX
+    );
+    for (const [, key, value] of bracketMatches) {
+      fields[key] = value;
+    }
+
+    const parenMatches = content.matchAll(
+      ObsidianFileLoader.DATAVIEW_INLINE_PAREN_REGEX
+    );
+    for (const [, key, value] of parenMatches) {
+      fields[key] = value;
+    }
+
+    return fields;
+  }
+
+  /**
+   * Converts metadata to a format compatible with Langchain.
+   * @param metadata The metadata object to convert.
+   * @returns A record object containing key-value pairs of Langchain-compatible metadata.
+   */
+  private toLangchainCompatibleMetadata(metadata: Record<string, unknown>) {
+    const result: Record<string, unknown> = {};
+    for (const [key, value] of Object.entries(metadata)) {
+      if (typeof value === "string" || typeof value === "number") {
+        result[key] = value;
+      } else {
+        result[key] = JSON.stringify(value);
+      }
+    }
+    return result;
+  }
+
+  /**
+   * It loads the Obsidian file, parses it, and returns a `Document` instance.
+   * @returns An array of `Document` instances to comply with the BaseDocumentLoader interface.
+   */
+  public async load(): Promise<Document[]> {
+    const documents: Document[] = [];
+
+    const { basename, readFile, stat } = await ObsidianFileLoader.imports();
+    const fileName = basename(this.filePath);
+    const stats = await stat(this.filePath);
+    let content = await readFile(this.filePath, this.encoding);
+
+    const frontMatter = this.parseFrontMatter(content);
+    const tags = this.parseObsidianTags(content);
+    const dataviewFields = this.parseObsidianDataviewFields(content);
+    content = this.removeFrontMatter(content);
+
+    const metadata: Document["metadata"] = {
+      source: fileName,
+      path: this.filePath,
+      created: stats.birthtimeMs,
+      lastModified: stats.mtimeMs,
+      lastAccessed: stats.atimeMs,
+      ...this.toLangchainCompatibleMetadata(frontMatter),
+      ...dataviewFields,
+    };
+
+    if (tags.size || frontMatter.tags) {
+      metadata.tags = Array.from(
+        new Set([...tags, ...(frontMatter.tags ?? [])])
+      ).join(",");
+    }
+
+    documents.push(
+      new Document({
+        pageContent: content,
+        metadata,
+      })
+    );
+
+    return documents;
+  }
+
+  /**
+   * Imports the necessary functions from the `node:path` and
+   * `node:fs/promises` modules. It is used to dynamically import the
+   * functions when needed. If the import fails, it throws an error
+   * indicating that the modules failed to load.
+   * @returns A promise that resolves to an object containing the imported functions.
+   */
+  static async imports(): Promise<{
+    basename: typeof BasenameT;
+    readFile: typeof ReadFileT;
+    stat: typeof StatT;
+  }> {
+    try {
+      const { basename } = await import("node:path");
+      const { readFile, stat } = await import("node:fs/promises");
+      return { basename, readFile, stat };
+    } catch (e) {
+      console.error(e);
+      throw new Error(
+        `Failed to load fs/promises. ObsidianFileLoader available only on environment 'node'. It appears you are running environment '${getEnv()}'. See https://<link to docs> for alternatives.`
+      );
+    }
+  }
+}
+
+/**
+ * Represents a loader for directories containing Obsidian markdown files. This loader extends
+ * the DirectoryLoader and provides functionality to load and parse '.md' files with YAML frontmatter,
+ * Obsidian tags, and Dataview fields.
+ */
+export class ObsidianLoader extends DirectoryLoader {
+  /**
+   * Initializes a new instance of the ObsidianLoader class.
+   * @param directoryPath The path to the directory containing Obsidian markdown files.
+   * @param encoding The character encoding to use when reading files. Defaults to 'utf-8'.
+   * @param collectMetadata Determines whether metadata should be collected from the files. Defaults to true.
+   */
+  constructor(directoryPath: string, options?: ObsidianFileLoaderOptions) {
+    super(
+      directoryPath,
+      {
+        ".md": (filePath) => new ObsidianFileLoader(filePath, options),
+      },
+      true,
+      UnknownHandling.Ignore
+    );
+  }
+}
diff --git a/langchain/src/document_loaders/tests/example_data/notion.md b/langchain/src/document_loaders/tests/example_data/notion/notion.md
similarity index 100%
rename from langchain/src/document_loaders/tests/example_data/notion.md
rename to langchain/src/document_loaders/tests/example_data/notion/notion.md
diff --git a/langchain/src/document_loaders/tests/example_data/obsidian/bad_frontmatter.md b/langchain/src/document_loaders/tests/example_data/obsidian/bad_frontmatter.md
new file mode 100644
index 000000000000..edc335e195ff
--- /dev/null
+++ b/langchain/src/document_loaders/tests/example_data/obsidian/bad_frontmatter.md
@@ -0,0 +1,9 @@
+---
+anArray:
+ one
+- two
+- three
+tags: 'onetag', 'twotag' ]
+---
+
+A document with frontmatter that isn't valid.
diff --git a/langchain/src/document_loaders/tests/example_data/obsidian/frontmatter.md b/langchain/src/document_loaders/tests/example_data/obsidian/frontmatter.md
new file mode 100644
index 000000000000..bb1f5b9f0fc5
--- /dev/null
+++ b/langchain/src/document_loaders/tests/example_data/obsidian/frontmatter.md
@@ -0,0 +1,5 @@
+---
+tags: journal/entry, obsidian
+---
+
+No other content than the frontmatter.
diff --git a/langchain/src/document_loaders/tests/example_data/obsidian/no_frontmatter.md b/langchain/src/document_loaders/tests/example_data/obsidian/no_frontmatter.md
new file mode 100644
index 000000000000..3943ec888c7e
--- /dev/null
+++ b/langchain/src/document_loaders/tests/example_data/obsidian/no_frontmatter.md
@@ -0,0 +1,14 @@
+### Description
+
+#recipes #dessert #cookies
+
+A document with HR elements that might trip up a front matter parser:
+
+---
+
+### Ingredients
+
+- 3/4 cup (170g) **unsalted butter**, slightly softened to room temperature.
+- 1 and 1/2 cups (180g) **confectioners’ sugar**
+
+---
diff --git a/langchain/src/document_loaders/tests/example_data/obsidian/no_metadata.md b/langchain/src/document_loaders/tests/example_data/obsidian/no_metadata.md
new file mode 100644
index 000000000000..70258e5aea71
--- /dev/null
+++ b/langchain/src/document_loaders/tests/example_data/obsidian/no_metadata.md
@@ -0,0 +1 @@
+A markdown document with no additional metadata.
diff --git a/langchain/src/document_loaders/tests/example_data/obsidian/tags_and_frontmatter.md b/langchain/src/document_loaders/tests/example_data/obsidian/tags_and_frontmatter.md
new file mode 100644
index 000000000000..1d108a11ac87
--- /dev/null
+++ b/langchain/src/document_loaders/tests/example_data/obsidian/tags_and_frontmatter.md
@@ -0,0 +1,36 @@
+---
+aFloat: 13.12345
+anInt: 15
+aBool: true
+aString: string value
+anArray:
+  - one
+  - two
+  - three
+aDict:
+  dictId1: "58417"
+  dictId2: 1500
+tags: ["onetag", "twotag"]
+---
+
+# Tags
+
+()#notatag
+#12345
+#read
+something #tagWithCases
+
+- #tag-with-dash
+  #tag_with_underscore #tag/with/nesting
+
+# Dataview
+
+Here is some data in a [dataview1:: a value] line.
+Here is even more data in a (dataview2:: another value) line.
+dataview3:: more data
+notdataview4: this is not a field
+notdataview5: this is not a field
+
+# Text content
+
+https://example.com/blog/#not-a-tag
diff --git a/langchain/src/document_loaders/tests/notion.test.ts b/langchain/src/document_loaders/tests/notion.test.ts
index 025da7591f59..ca0680685023 100644
--- a/langchain/src/document_loaders/tests/notion.test.ts
+++ b/langchain/src/document_loaders/tests/notion.test.ts
@@ -6,7 +6,7 @@ import { NotionLoader } from "../fs/notion.js";
 test("Test Notion Loader", async () => {
   const directoryPath = path.resolve(
     path.dirname(url.fileURLToPath(import.meta.url)),
-    "./example_data"
+    "./example_data/notion"
   );
   const loader = new NotionLoader(directoryPath);
   const docs = await loader.load();
diff --git a/langchain/src/document_loaders/tests/obsidian.test.ts b/langchain/src/document_loaders/tests/obsidian.test.ts
new file mode 100644
index 000000000000..0b0fcd8f906f
--- /dev/null
+++ b/langchain/src/document_loaders/tests/obsidian.test.ts
@@ -0,0 +1,191 @@
+import { test, expect } from "@jest/globals";
+import * as url from "node:url";
+import * as path from "node:path";
+import { ObsidianLoader } from "../fs/obsidian.js";
+import { Document } from "../../document.js";
+
+const STANDARD_METADATA_FIELDS = [
+  "created",
+  "path",
+  "source",
+  "lastAccessed",
+  "lastModified",
+];
+
+const FRONTMATTER_FIELDS = [
+  "aBool",
+  "aFloat",
+  "anInt",
+  "anArray",
+  "aString",
+  "aDict",
+  "tags",
+];
+
+const DATAVIEW_FIELDS = ["dataview1", "dataview2", "dataview3"];
+
+const directoryPath = path.resolve(
+  path.dirname(url.fileURLToPath(import.meta.url)),
+  "./example_data/obsidian"
+);
+
+let docs: Document[];
+
+beforeAll(async () => {
+  const loader = new ObsidianLoader(directoryPath);
+  docs = await loader.load();
+});
+
+test("Test page content is loaded", async () => {
+  expect(docs.length).toBe(5);
+  docs.forEach((doc) => {
+    expect(doc.pageContent).toBeTruthy();
+  });
+});
+
+test("Test no additional metadata is collected if collectMetadata is false", async () => {
+  const noMetadataLoader = new ObsidianLoader(directoryPath, {
+    collectMetadata: false,
+  });
+  const noMetadataDocs = await noMetadataLoader.load();
+
+  expect(noMetadataDocs.length).toBe(5);
+  expect(
+    noMetadataDocs.every(
+      (doc) =>
+        Object.keys(doc.metadata).length ===
+          Object.keys(STANDARD_METADATA_FIELDS).length &&
+        Object.keys(doc.metadata).every((key) =>
+          STANDARD_METADATA_FIELDS.includes(key)
+        )
+    )
+  ).toBe(true);
+});
+
+test("Test docs without frontmatter still have basic metadata", async () => {
+  const doc = docs.find((doc) => doc.metadata.source === "no_metadata.md");
+
+  if (!doc) {
+    fail("'no_metadata.md' not found.");
+  }
+
+  expect(
+    Object.keys(doc.metadata).every((key) =>
+      STANDARD_METADATA_FIELDS.includes(key)
+    )
+  ).toBe(true);
+});
+
+test("Test standard frontmatter fields are loaded", async () => {
+  const doc = docs.find((doc) => doc.metadata.source === "frontmatter.md");
+
+  if (!doc) {
+    fail("'frontmatter.md' not found.");
+  }
+
+  expect(Object.keys(doc.metadata)).toEqual(
+    expect.arrayContaining(STANDARD_METADATA_FIELDS.concat("tags"))
+  );
+
+  const tagsSet = new Set(doc.metadata.tags?.split(","));
+  expect(tagsSet.has("journal/entry")).toBe(true);
+  expect(tagsSet.has("obsidian")).toBe(true);
+});
+
+test("Test a doc with non-yaml frontmatter still have basic metadata", async () => {
+  const doc = docs.find((doc) => doc.metadata.source === "bad_frontmatter.md");
+
+  if (!doc) {
+    fail("'bad_frontmatter.md' not found.");
+  }
+
+  expect(
+    Object.keys(doc.metadata).every((key) =>
+      STANDARD_METADATA_FIELDS.includes(key)
+    )
+  ).toBe(true);
+});
+
+test("Test a doc with frontmatter and tags/dataview tags are all added to metadata", () => {
+  const doc = docs.find(
+    (doc) => doc.metadata.source === "tags_and_frontmatter.md"
+  );
+
+  if (!doc) {
+    fail("'tags_and_frontmatter.md' not found.");
+  }
+
+  const expectedFields = [
+    ...STANDARD_METADATA_FIELDS,
+    ...FRONTMATTER_FIELDS,
+    ...DATAVIEW_FIELDS,
+  ];
+  expect(Object.keys(doc.metadata)).toEqual(
+    expect.arrayContaining(expectedFields)
+  );
+});
+
+test("Test float metadata is loaded correctly", () => {
+  const doc = docs.find(
+    (doc) => doc.metadata.source === "tags_and_frontmatter.md"
+  );
+
+  if (!doc) {
+    fail("Document 'tags_and_frontmatter.md' not found.");
+    return;
+  }
+
+  expect(doc.metadata.aFloat).toBe(13.12345);
+});
+
+test("Test int metadata is loaded correctly", () => {
+  const doc = docs.find(
+    (doc) => doc.metadata.source === "tags_and_frontmatter.md"
+  );
+
+  if (!doc) {
+    fail("Document 'tags_and_frontmatter.md' not found.");
+    return;
+  }
+
+  expect(doc.metadata.anInt).toBe(15);
+});
+
+test("Test string metadata is loaded correctly", () => {
+  const doc = docs.find(
+    (doc) => doc.metadata.source === "tags_and_frontmatter.md"
+  );
+
+  if (!doc) {
+    fail("Document 'tags_and_frontmatter.md' not found.");
+    return;
+  }
+
+  expect(doc.metadata.aString).toBe("string value");
+});
+
+test("Test array metadata is loaded as a string", () => {
+  const doc = docs.find(
+    (doc) => doc.metadata.source === "tags_and_frontmatter.md"
+  );
+
+  if (!doc) {
+    fail("Document 'tags_and_frontmatter.md' not found.");
+    return;
+  }
+
+  expect(doc.metadata.anArray).toBe('["one","two","three"]');
+});
+
+test("Test dict metadata is stored as a string", () => {
+  const doc = docs.find(
+    (doc) => doc.metadata.source === "tags_and_frontmatter.md"
+  );
+
+  if (!doc) {
+    fail("Document 'tags_and_frontmatter.md' not found.");
+    return;
+  }
+
+  expect(doc.metadata.aDict).toBe('{"dictId1":"58417","dictId2":1500}');
+});
diff --git a/langchain/src/load/import_constants.ts b/langchain/src/load/import_constants.ts
index 9bf8f2b4cb46..cb3f4719cc88 100644
--- a/langchain/src/load/import_constants.ts
+++ b/langchain/src/load/import_constants.ts
@@ -110,6 +110,7 @@ export const optionalImportEntrypoints = [
   "langchain/document_loaders/fs/epub",
   "langchain/document_loaders/fs/csv",
   "langchain/document_loaders/fs/notion",
+  "langchain/document_loaders/fs/obsidian",
   "langchain/document_loaders/fs/unstructured",
   "langchain/document_loaders/fs/openai_whisper_audio",
   "langchain/document_loaders/fs/pptx",
diff --git a/langchain/src/load/import_type.d.ts b/langchain/src/load/import_type.d.ts
index 052c975320f8..94f1753cbb70 100644
--- a/langchain/src/load/import_type.d.ts
+++ b/langchain/src/load/import_type.d.ts
@@ -328,6 +328,9 @@ export interface OptionalImportMap {
   "langchain/document_loaders/fs/notion"?:
     | typeof import("../document_loaders/fs/notion.js")
     | Promise<typeof import("../document_loaders/fs/notion.js")>;
+  "langchain/document_loaders/fs/obsidian"?:
+    | typeof import("../document_loaders/fs/obsidian.js")
+    | Promise<typeof import("../document_loaders/fs/obsidian.js")>;
   "langchain/document_loaders/fs/unstructured"?:
     | typeof import("../document_loaders/fs/unstructured.js")
     | Promise<typeof import("../document_loaders/fs/unstructured.js")>;