diff --git a/README.md b/README.md
index e4dcf075..8c2eb383 100644
--- a/README.md
+++ b/README.md
@@ -122,7 +122,7 @@ The `qiskit_sphinx_theme` extension defines the below custom directives for you
 
 You can add a custom logo by adding a logo file (SVG or PNG) as a sibling to your `conf.py`, e.g. `docs/logo.svg`. Then, set `html_logo` in `conf.py` to the name of the file, e.g. `html_logo = "logo.png"`.
 
-When using a custom logo, you may want to disable the project's name in the sidebar by setting `sidebar_hide_name` in `html_theme_options`:
+When using a custom logo, you may want to disable the project's name in the sidebar by setting `sidebar_hide_name` in `html_theme_options` in `conf.py`:
 
 ```python
 html_theme_options = {
@@ -130,6 +130,20 @@ html_theme_options = {
 }
 ```
 
+## Qiskit ecosystem members
+
+If your project is a member of the [Qiskit ecosystem](https://www.ibm.com/quantum/ecosystem), we encourage you to set the following configuration so that the left sidebar mentions your project being in the ecosystem.
+
+Update `conf.py`:
+
+```python
+html_theme_options = {
+    "sidebar_qiskit_ecosystem_member": True,
+}
+```
+
+Non-ecosystem members should not set this option.
+
 ## Tip: suggested site structure
 
 To keep UX/UI similar across different Qiskit ecosystem packages, consider using the following structure for your sidebar, which can be set in the toctree of your `index.rst`:
diff --git a/example_docs/docs/conf.py b/example_docs/docs/conf.py
index c72dfd16..2e9ce1ba 100644
--- a/example_docs/docs/conf.py
+++ b/example_docs/docs/conf.py
@@ -29,6 +29,13 @@
     "source_directory": "example_docs/docs/",
 }
 
+# Members of the Qiskit ecosystem should set `sidebar_qiskit_ecosystem_member`
+# explicitly in `html_theme_options`. This convoluted code is only set up
+# this way to discourage projects who copy this config file from
+# unintentionally configuring this option.
+if project == "Example Docs":
+    html_theme_options["sidebar_qiskit_ecosystem_member"] = True
+
 # This allows including custom CSS and HTML templates.
 html_static_path = ["_static"]
 templates_path = ["_templates"]
diff --git a/src/qiskit_sphinx_theme/theme/qiskit-sphinx-theme/custom_templates/sidebar_brand.html b/src/qiskit_sphinx_theme/theme/qiskit-sphinx-theme/custom_templates/sidebar_brand.html
index 00cedd9d..ef9afdb1 100644
--- a/src/qiskit_sphinx_theme/theme/qiskit-sphinx-theme/custom_templates/sidebar_brand.html
+++ b/src/qiskit_sphinx_theme/theme/qiskit-sphinx-theme/custom_templates/sidebar_brand.html
@@ -21,7 +21,8 @@
   {%- endif %}
   {% endblock brand_content %}
 </a>
-{#- Add a link to the Qiskit ecosystem web page. -#}
+{% if theme_sidebar_qiskit_ecosystem_member %}
 <p class="sidebar-ecosystem-link">
   This project is part of the <a class="reference external" href="https://www.ibm.com/quantum/ecosystem">Qiskit ecosystem</a>
 </p>
+{%- endif %}
diff --git a/src/qiskit_sphinx_theme/theme/qiskit-sphinx-theme/theme.conf b/src/qiskit_sphinx_theme/theme/qiskit-sphinx-theme/theme.conf
index faf45327..d20fa8ff 100644
--- a/src/qiskit_sphinx_theme/theme/qiskit-sphinx-theme/theme.conf
+++ b/src/qiskit_sphinx_theme/theme/qiskit-sphinx-theme/theme.conf
@@ -24,5 +24,6 @@ sidebars =
   custom_templates/sidebar_languages.html
 
 [options]
+sidebar_qiskit_ecosystem_member =
 # This option is no longer used in v2+, but it's kept for backwards compatibility.
 disable_ecosystem_logo =