diff --git a/packages/knip/fixtures/plugins/xo/.xo-config.js b/packages/knip/fixtures/plugins/xo/.xo-config.js
new file mode 100644
index 000000000..836dbfa6d
--- /dev/null
+++ b/packages/knip/fixtures/plugins/xo/.xo-config.js
@@ -0,0 +1,9 @@
+module.exports = {
+  space: true,
+  prettier: true,
+  plugins: ['unused-imports'],
+  parserOptions: {emitDecoratorMetadata: true},
+  rules: {
+    'func-names': ['error', 'always'],
+  },
+};
diff --git a/packages/knip/fixtures/plugins/xo/node_modules/xo/index.js b/packages/knip/fixtures/plugins/xo/node_modules/xo/index.js
new file mode 100644
index 000000000..e69de29bb
diff --git a/packages/knip/fixtures/plugins/xo/node_modules/xo/package.json b/packages/knip/fixtures/plugins/xo/node_modules/xo/package.json
new file mode 100644
index 000000000..0510f1374
--- /dev/null
+++ b/packages/knip/fixtures/plugins/xo/node_modules/xo/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "xo",
+  "bin": "index.js"
+}
diff --git a/packages/knip/fixtures/plugins/xo/package.json b/packages/knip/fixtures/plugins/xo/package.json
new file mode 100644
index 000000000..1eed5e227
--- /dev/null
+++ b/packages/knip/fixtures/plugins/xo/package.json
@@ -0,0 +1,13 @@
+{
+  "name": "@fixtures/xo",
+  "scripts": {
+    "test": "xo"
+  },
+  "devDependencies": {
+    "xo": "^0.24.0"
+  },
+  "xo": {
+    "space": true,
+    "plugins": ["eslint-comments"]
+  }
+}
diff --git a/packages/knip/fixtures/plugins/xo/xo-config.cjs b/packages/knip/fixtures/plugins/xo/xo-config.cjs
new file mode 100644
index 000000000..2780f4402
--- /dev/null
+++ b/packages/knip/fixtures/plugins/xo/xo-config.cjs
@@ -0,0 +1,8 @@
+const mySharedConfig = require('glob');
+
+module.exports = {
+  ...mySharedConfig,
+  rules: {
+    'func-names': 'off',
+  },
+};
\ No newline at end of file
diff --git a/packages/knip/schema.json b/packages/knip/schema.json
index f732b9a8a..e57fee421 100644
--- a/packages/knip/schema.json
+++ b/packages/knip/schema.json
@@ -507,6 +507,10 @@
           "title": "wrangler plugin configuration (https://github.com/webpro/knip/blob/main/src/plugins/wrangler/README.md)",
           "$ref": "#/definitions/plugin"
         },
+        "xo": {
+          "title": "xo plugin configuration (https://github.com/webpro/knip/blob/main/src/plugins/xo/README.md)",
+          "$ref": "#/definitions/plugin"
+        },
         "yorkie": {
           "title": "yorkie plugin configuration (https://github.com/webpro/knip/blob/main/src/plugins/yorkie/README.md)",
           "$ref": "#/definitions/plugin"
diff --git a/packages/knip/src/ConfigurationValidator.ts b/packages/knip/src/ConfigurationValidator.ts
index 1c201e237..a81858b7e 100644
--- a/packages/knip/src/ConfigurationValidator.ts
+++ b/packages/knip/src/ConfigurationValidator.ts
@@ -135,6 +135,7 @@ const pluginsSchema = z.object({
   webpack: pluginSchema,
   wireit: pluginSchema,
   wrangler: pluginSchema,
+  xo: pluginSchema,
   yorkie: pluginSchema,
 });
 
diff --git a/packages/knip/src/plugins/index.ts b/packages/knip/src/plugins/index.ts
index 09a31f3d5..d8c18f918 100644
--- a/packages/knip/src/plugins/index.ts
+++ b/packages/knip/src/plugins/index.ts
@@ -58,3 +58,4 @@ export { default as webpack } from './webpack/index.js';
 export { default as wireit } from './wireit/index.js';
 export { default as wrangler } from './wrangler/index.js';
 export { default as yorkie } from './yorkie/index.js';
+export { default as xo } from './xo/index.js';
diff --git a/packages/knip/src/plugins/xo/index.ts b/packages/knip/src/plugins/xo/index.ts
new file mode 100644
index 000000000..055f15a3f
--- /dev/null
+++ b/packages/knip/src/plugins/xo/index.ts
@@ -0,0 +1,34 @@
+import type { EnablerPatterns } from '#p/types/config.js';
+import type { IsPluginEnabled, Plugin, ResolveConfig } from '#p/types/plugins.js';
+import { hasDependency } from '#p/util/plugin.js';
+import { getDependenciesDeep } from '../eslint/helpers.js';
+import type { XOConfig } from './types.js';
+
+// link to xo docs: https://github.com/xojs/xo#config
+
+const title = 'xo';
+
+const enablers: EnablerPatterns = ['xo'];
+
+const isEnabled: IsPluginEnabled = ({ dependencies, config }) =>
+  hasDependency(dependencies, enablers) || 'xo' in config;
+
+const packageJsonPath = 'xo';
+const config: string[] = ['{.,}xo-config.{js,cjs,json,}', 'package.json'];
+
+const entry: string[] = ['{.,}xo-config.{js,cjs}'];
+
+const resolveConfig: ResolveConfig<XOConfig> = async (config, options) => {
+  const dependencies = await getDependenciesDeep(config, options);
+  return [...dependencies];
+};
+
+export default {
+  title,
+  enablers,
+  isEnabled,
+  packageJsonPath,
+  entry,
+  config,
+  resolveConfig,
+} satisfies Plugin;
diff --git a/packages/knip/src/plugins/xo/types.ts b/packages/knip/src/plugins/xo/types.ts
new file mode 100644
index 000000000..8b89ac814
--- /dev/null
+++ b/packages/knip/src/plugins/xo/types.ts
@@ -0,0 +1,13 @@
+import type { ESLintConfig } from '../eslint/types.js';
+
+export type XOConfig = ESLintConfig & {
+  envs?: string[] | undefined;
+  globals?: string[] | undefined;
+  ignores?: string[] | undefined;
+  nodeVersion?: string | boolean | undefined;
+  prettier?: boolean | undefined;
+  printConfig?: string | undefined;
+  semicolon?: boolean | undefined;
+  space?: boolean | number | undefined;
+  webpack?: boolean | object | undefined;
+};
diff --git a/packages/knip/test/plugins/xo.test.ts b/packages/knip/test/plugins/xo.test.ts
new file mode 100644
index 000000000..7774edbea
--- /dev/null
+++ b/packages/knip/test/plugins/xo.test.ts
@@ -0,0 +1,26 @@
+import { test } from 'bun:test';
+import assert from 'node:assert/strict';
+import { main } from '../../src/index.js';
+import { resolve } from '../../src/util/path.js';
+import baseArguments from '../helpers/baseArguments.js';
+import baseCounters from '../helpers/baseCounters.js';
+
+const cwd = resolve('fixtures/plugins/xo');
+
+test('Find dependencies with the xo plugin', async () => {
+  const { issues, counters } = await main({
+    ...baseArguments,
+    cwd,
+  });
+
+  assert(issues.unlisted['.xo-config.js']['eslint-plugin-unused-imports']);
+  assert(issues.unlisted['xo-config.cjs']['glob']);
+  assert(issues.unlisted['package.json']['eslint-plugin-eslint-comments']);
+
+  assert.deepEqual(counters, {
+    ...baseCounters,
+    processed: 2,
+    unlisted: 3,
+    total: 2,
+  });
+});