diff --git a/.github/workflows/fetch-and-compile-runtime-docs.yml b/.github/workflows/fetch-and-compile-runtime-docs.yml
index 0c8345e..281ff51 100644
--- a/.github/workflows/fetch-and-compile-runtime-docs.yml
+++ b/.github/workflows/fetch-and-compile-runtime-docs.yml
@@ -40,18 +40,26 @@ jobs:
             mkdocs-jupyter \
             pymdown-extensions
         # Note: The `mkdocs.yml` file we pull from the `nmdc-runtime` repo sets the overrides directory to `mkdocs_overrides`.
-      - name: Copy files that override parts of theme
-        run: cp pullers/runtime_docs/mkdocs_overrides/main.html _clones/microbiomedata/nmdc-runtime/mkdocs_overrides/main.html
-        # Docs: https://www.mkdocs.org/user-guide/cli/
-        # Docs: https://www.mkdocs.org/user-guide/configuration/#configuration-inheritance
-        # TODO: Make the `site_url` configurable (e.g. via an environment variable).
+      - name: Copy files that override or customize parts of theme
+        run: |
+          cp pullers/runtime_docs/mkdocs_overrides/main.html _clones/microbiomedata/nmdc-runtime/mkdocs_overrides/main.html
+          cp pullers/runtime_docs/assets/images/favicon.ico  _clones/microbiomedata/nmdc-runtime/assets/images/favicon.ico
       - name: Compile source documents into HTML
+        #
+        # References:
+        # - https://www.mkdocs.org/user-guide/cli/
+        # - https://www.mkdocs.org/user-guide/configuration/#configuration-inheritance
+        # - https://squidfunk.github.io/mkdocs-material/setup/changing-the-logo-and-icons/#favicon
+        #
+        # TODO: Make the `site_url` configurable (e.g. via an environment variable).
+        #
         working-directory: _clones/microbiomedata/nmdc-runtime
         run: |
           echo '{
             "INHERIT": "mkdocs.yml",
             "site_dir": "${{ github.workspace }}/_dist",
-            "site_url": "https://docs.microbiomedata.org/runtime/"
+            "site_url": "https://docs.microbiomedata.org/runtime/",
+            "theme": {"favicon": "assets/images/favicon.ico"}
           }' | mkdocs build -f -
         # Upload the result as an "artifact" so it can then be downloaded and used by another job.
       - name: Save the HTML for publishing later  # Docs: https://github.com/actions/upload-artifact
diff --git a/pullers/runtime_docs/Dockerfile b/pullers/runtime_docs/Dockerfile
index 507d2bc..a88e954 100644
--- a/pullers/runtime_docs/Dockerfile
+++ b/pullers/runtime_docs/Dockerfile
@@ -33,13 +33,21 @@ RUN git clone --no-checkout --depth=1 --single-branch --branch=main --filter=tre
 # Copy files we can use to override parts of the Material for MkDocs theme.
 # Note: The `mkdocs.yml` file we pull from the `nmdc-runtime` repo sets the overrides directory to `mkdocs_overrides`.
 COPY mkdocs_overrides/main.html nmdc-runtime/mkdocs_overrides/main.html
+COPY assets/images/favicon.ico  nmdc-runtime/docs/assets/images/favicon.ico
 
 # Compile source documents into HTML.
+#
+# References:
+# - https://www.mkdocs.org/user-guide/cli/
+# - https://www.mkdocs.org/user-guide/configuration/#configuration-inheritance
+# - https://squidfunk.github.io/mkdocs-material/setup/changing-the-logo-and-icons/#favicon
+#
 RUN cd nmdc-runtime && \
     echo '{\
         "INHERIT": "mkdocs.yml",\
         "site_dir": "/html",\
-        "site_url": "http://localhost:8000/"\
+        "site_url": "http://localhost:8000/",\
+        "theme": {"favicon": "assets/images/favicon.ico"}\
     }' | mkdocs build -f -
 
 EXPOSE 8000
diff --git a/pullers/runtime_docs/assets/images/favicon.ico b/pullers/runtime_docs/assets/images/favicon.ico
new file mode 100644
index 0000000..dff6056
Binary files /dev/null and b/pullers/runtime_docs/assets/images/favicon.ico differ