diff --git a/docs/documentation/api.md b/docs/documentation/api.md
index a8399dc9ac..7ad0bcbaff 100644
--- a/docs/documentation/api.md
+++ b/docs/documentation/api.md
@@ -370,7 +370,7 @@ it? There's several major benefits to this system:
   version, with the key variables (like the Zulip server URL) already
   pre-substituted for the user.
 - We're able to share implementation language and visual styling with
-  our Help Center, which is especially useful for the extensive
+  our help center, which is especially useful for the extensive
   non-REST API documentation pages (e.g., our bot framework).
 
 Using the standard OpenAPI format gives us flexibility, though; if we
diff --git a/docs/overview/architecture-overview.md b/docs/overview/architecture-overview.md
index 28d60ddc38..dd013b04be 100644
--- a/docs/overview/architecture-overview.md
+++ b/docs/overview/architecture-overview.md
@@ -53,8 +53,8 @@ means that one person might be a user of multiple Zulip realms. The
 administrators of an organization have a great deal of control over
 who can register an account, what permissions new users have, etc. For
 more on security considerations and options, see [the security model
-section](../production/security-model.md) and the [Zulip Help
-Center](https://zulip.com/help/).
+section](../production/security-model.md) and the [Zulip help
+center](https://zulip.com/help/).
 
 ## Components
 
diff --git a/docs/overview/changelog.md b/docs/overview/changelog.md
index 7232d6b9a6..90d7a80cc1 100644
--- a/docs/overview/changelog.md
+++ b/docs/overview/changelog.md
@@ -67,7 +67,7 @@ _Released 2025-09-11_
 - Fixed a bug resulting in useless extra suggestions in the search
   typeahead.
 - Optimized performance for processing deleted messages slightly.
-- Backported several improvements to Help Center and API
+- Backported several improvements to help center and API
   documentation.
 - Added configuration options to allow webhooks to access to specific
   local-network IP addresses.
@@ -1056,7 +1056,7 @@ _Released 2024-07-25_
 - Improved how desktop and mobile push notifications display quoted
   content to focus on the reply over the quoted content.
 - Improved filtering options for the GitHub integration.
-- Improved dozens of Help Center articles.
+- Improved dozens of help center articles.
 - Improved wording in various automated notices.
 - Improved new-organization defaults for various permissions settings.
 - Improved how users are displayed in settings to use clickable user
@@ -1734,7 +1734,7 @@ _Released 2023-05-31_
 - New compose box features: Scheduling a message to be sent later, a
   nicer stream picker, and the ability to switch between stream and
   private messages.
-- Numerous improvements to the Help Center, including documentation
+- Numerous improvements to the help center, including documentation
   for how to complete many common tasks in the Zulip mobile apps.
 - Redesigned the interface and permissions model for moving topics to
   be independent from message content editing, providing a cleaner
@@ -2469,8 +2469,8 @@ _Released 2022-03-29_
 - Redesigned hover behavior for timestamps and time mentions.
 - Messages sent by muted users can now be rehidden after being
   revealed. One can also now mute deactivated users.
-- Rewrote Help Center guides for new organizations and users, and made
-  hundreds of other improvements to Help Center content and organization.
+- Rewrote help center guides for new organizations and users, and made
+  hundreds of other improvements to help center content and organization.
 - Reimplemented the image lightbox's pan/zoom functionality to be
   nicer, allowing us to enable it be default.
 - Added styled loading page for the web application.
@@ -3649,7 +3649,7 @@ _Released 2019-12-12_
   bot's owner.
 - Restructured "private messages" widget to have a cleaner design.
 - Significantly improved performance of the backend Markdown processor.
-- Significantly improved Help Center documentation of dozens of features.
+- Significantly improved help center documentation of dozens of features.
 - Simplified and internationalized some notification bot messages.
 - The compose box placeholder now shows users active status.
 - Clicking the "EDITED" text on a message now pops message edit history.
@@ -3903,7 +3903,7 @@ _Released 2019-03-01_
 - Expanded production documentation for more unusual deployment options.
 - Expanded set of characters allowed in custom linkifiers.
 - Optimized development provisioning; now takes 2s in the no-op case.
-- Zulip's Help Center now has nicely generated open graph tags.
+- Zulip's help center now has nicely generated open graph tags.
 - Fixed missing API authentication headers for mobile file access.
 - Fixed various select and copy-paste issues.
 - Fixed various back button bugs in settings UI.
@@ -4058,7 +4058,7 @@ _Released 2018-11-07_
 - Updated numerous pages within the /help/ site.
 - We no longer require re-authing to sign up after trying to log in with
   an OAuth authentication backend (GitHub or Google).
-- Made major improvements to the Help Center.
+- Made major improvements to the help center.
 - Improved system for configuring the S3 file uploads backend.
 - Improved emoji typeahead sorting.
 - Improved Zulip's layout for windows with a width around 1024px.
diff --git a/docs/translating/finnish.md b/docs/translating/finnish.md
index ab5ee063c9..3fff249fa2 100644
--- a/docs/translating/finnish.md
+++ b/docs/translating/finnish.md
@@ -103,7 +103,7 @@ Use commas in whole sentences where it is required. You can use these instructio
 - Filter - **Suodata**
 - Full member - **Täysivaltainen jäsen**
 - Host - **Isäntä**
-- Help Center - **Tukikeskus**
+- Help center - **Tukikeskus**
 - ID - **Tunnus**
 - Integraatio - **Integraatio**
 - Interactive - **Interaktiivinen**
diff --git a/docs/tutorials/new-feature-tutorial.md b/docs/tutorials/new-feature-tutorial.md
index 967813fe42..e13950b5ea 100644
--- a/docs/tutorials/new-feature-tutorial.md
+++ b/docs/tutorials/new-feature-tutorial.md
@@ -68,7 +68,7 @@ organization in Zulip). The following files are involved in the process:
 
 - `zerver/openapi/zulip.yaml`: OpenAPI definitions for the Zulip REST API.
 - `api_docs/changelog.md`: documentation listing all changes to the Zulip Server API.
-- `help/...`: end user facing documentation (Help Center) for the application.
+- `help/...`: end user facing documentation (help center) for the application.
 
 ### Adding a field to the database
 
diff --git a/templates/zerver/development/dev_tools.html b/templates/zerver/development/dev_tools.html
index b5c64618c9..7d744a1dac 100644
--- a/templates/zerver/development/dev_tools.html
+++ b/templates/zerver/development/dev_tools.html
@@ -137,7 +137,7 @@
                 </ul>
             </li>
         </ul>
-        <h2>Development instructions for Help Center (Beta)</h2>
+        <h2>Development instructions for help center (Beta)</h2>
         <p>
             These commands are to run the project for an ongoing migration for our help center docs to use
             <a href="https://github.com/withastro/starlight">@astrojs/starlight</a>. You can track the
diff --git a/tools/lib/capitalization.py b/tools/lib/capitalization.py
index 47737eff44..be333ca972 100644
--- a/tools/lib/capitalization.py
+++ b/tools/lib/capitalization.py
@@ -22,7 +22,6 @@ IGNORED_PHRASES = [
     r"GCM",
     r"GitHub",
     r"Gravatar",
-    r"Help Center",
     r"HTTP",
     r"ID",
     r"IDs",
diff --git a/tools/linter_lib/custom_check.py b/tools/linter_lib/custom_check.py
index 1a35bc35d6..3ec225acc1 100644
--- a/tools/linter_lib/custom_check.py
+++ b/tools/linter_lib/custom_check.py
@@ -680,7 +680,7 @@ html_rules: list["Rule"] = [
     },
     {
         "pattern": r"link=\"help/",
-        "description": "Relative links to Help Center should start with /help/",
+        "description": "Relative links to help center should start with /help/",
         "good_lines": ['link="/help/foo"'],
         "bad_lines": ['link="help/foo"'],
     },
diff --git a/web/src/portico/help.ts b/web/src/portico/help.ts
index e658f6deb5..575a06060f 100644
--- a/web/src/portico/help.ts
+++ b/web/src/portico/help.ts
@@ -31,7 +31,7 @@ function register_tabbed_section($tabbed_section: JQuery): void {
 }
 
 // Display the copy-to-clipboard button inside the .codehilite element
-// within the API and Help Center docs using clipboard.js
+// within the API and help center docs using clipboard.js
 function add_copy_to_clipboard_element($codehilite: JQuery): void {
     const $copy_button = $("<span>").addClass("copy-button copy-codeblock");
     $copy_button.html(zulip_copy_icon());
diff --git a/zerver/lib/onboarding.py b/zerver/lib/onboarding.py
index 62c31f0371..2b1cd8247c 100644
--- a/zerver/lib/onboarding.py
+++ b/zerver/lib/onboarding.py
@@ -263,7 +263,7 @@ times, and more.
 Here are a few messages I understand: {bot_commands}
 
 Check out our [Getting started guide](/help/getting-started-with-zulip),
-or browse the [Help center](/help/) to learn more!
+or browse the [help center](/help/) to learn more!
 """).format(bot_commands=bot_commands(no_help_command=True))
     else:
         return _("""
diff --git a/zerver/openapi/zulip.yaml b/zerver/openapi/zulip.yaml
index 9931472b03..77dc662083 100644
--- a/zerver/openapi/zulip.yaml
+++ b/zerver/openapi/zulip.yaml
@@ -8579,7 +8579,7 @@ paths:
         Fetch the message edit history of a previously edited message.
 
         Note that edit history may be disabled in some organizations; see the
-        [Zulip Help Center documentation on editing messages][edit-settings].
+        [Zulip help center documentation on editing messages][edit-settings].
 
         [edit-settings]: /help/view-a-messages-edit-history
       parameters:
@@ -10079,7 +10079,7 @@ paths:
 
         This API corresponds to the
         [delete a message completely][delete-completely] feature documented in
-        the Zulip Help Center.
+        the Zulip help center.
 
         [delete-completely]: /help/delete-a-message#delete-a-message-completely
       x-requires-administrator: true
diff --git a/zerver/tests/test_middleware.py b/zerver/tests/test_middleware.py
index 768d8ef139..4d88ee11d9 100644
--- a/zerver/tests/test_middleware.py
+++ b/zerver/tests/test_middleware.py
@@ -100,7 +100,7 @@ class OpenGraphTest(ZulipTestCase):
     def test_nonexistent_page(self) -> None:
         self.check_title_and_description(
             "/api/not-a-real-page",
-            # Probably we should make this "Zulip Help Center"
+            # Probably we should make this "Zulip help center"
             "No such article. | Zulip API documentation",
             [
                 "No such article.",
diff --git a/zerver/tests/test_tutorial.py b/zerver/tests/test_tutorial.py
index bca9678aac..8e927e165a 100644
--- a/zerver/tests/test_tutorial.py
+++ b/zerver/tests/test_tutorial.py
@@ -142,7 +142,7 @@ class TutorialTests(ZulipTestCase):
                 "`apps`, `profile`, `theme`, "
                 "`channels`, `topics`, `message formatting`, `keyboard shortcuts`.\n\n"
                 "Check out our [Getting started guide](/help/getting-started-with-zulip), "
-                "or browse the [Help center](/help/) to learn more!"
+                "or browse the [help center](/help/) to learn more!"
             )
             self.assertEqual(most_recent_message(user).content, expected_response)
 
@@ -161,7 +161,7 @@ class TutorialTests(ZulipTestCase):
                 "`apps`, `profile`, `theme`, "
                 "`channels`, `topics`, `message formatting`, `keyboard shortcuts`.\n\n"
                 "Check out our [Getting started guide](/help/getting-started-with-zulip), "
-                "or browse the [Help center](/help/) to learn more!"
+                "or browse the [help center](/help/) to learn more!"
             )
             message = most_recent_message(user)
             self.assertEqual(message.content, expected_response)