diff --git a/readthedocs/integrations/models.py b/readthedocs/integrations/models.py
index f193b3e0c8c..2f0d71dc666 100644
--- a/readthedocs/integrations/models.py
+++ b/readthedocs/integrations/models.py
@@ -3,8 +3,8 @@
 import json
 import re
 import uuid
+from dataclasses import dataclass
 
-from django.conf import settings
 from django.contrib.contenttypes.fields import GenericForeignKey
 from django.contrib.contenttypes.fields import GenericRelation
 from django.contrib.contenttypes.models import ContentType
@@ -351,7 +351,27 @@ def can_sync(self):
             return False
 
 
+@dataclass
+class GitHubAppIntegrationProviderData:
+    installation_id: int
+    repository_id: int
+    repository_full_name: str
+
+
 class GitHubAppIntegration(Integration):
+    """
+    Dummy integration for GitHub App projects.
+
+    This is a proxy model for the Integration model, which is used to
+    represent GitHub App integrations in the UI.
+
+    This integration is automatically created when a project is linked to a
+    remote repository from a GitHub App installation, and it remains
+    associated with the project even if the remote repository is removed.
+
+    The `provider_data` field is a JSON representation of the `GitHubAppIntegrationProviderData` class.
+    """
+
     integration_type_id = Integration.GITHUBAPP
     has_sync = False
     is_remote_only = True
@@ -372,11 +392,9 @@ def get_absolute_url(self) -> str | None:
         # using. We might want to store this on the model later so a repository
         # that is removed from the installation can still link to the
         # installation the project was _previously_ using.
-        try:
-            installation_id = self.project.remote_repository.github_app_installation.installation_id
-            return f"https://github.com/apps/{settings.GITHUB_APP_NAME}/installations/{installation_id}"
-        except AttributeError:
-            return None
+        if self.project.is_github_app_project:
+            return self.project.remote_repository.github_app_installation.url
+        return None
 
     @property
     def is_active(self) -> bool:
diff --git a/readthedocs/oauth/models.py b/readthedocs/oauth/models.py
index 4753410de64..5cf93bb7d6d 100644
--- a/readthedocs/oauth/models.py
+++ b/readthedocs/oauth/models.py
@@ -4,6 +4,7 @@
 
 import structlog
 from allauth.socialaccount.models import SocialAccount
+from django.conf import settings
 from django.contrib.auth.models import User
 from django.core.validators import URLValidator
 from django.db import models
@@ -94,6 +95,11 @@ def service(self):
 
         return GitHubAppService(self)
 
+    @property
+    def url(self):
+        """Return the URL to the GitHub App installation page."""
+        return f"https://github.com/apps/{settings.GITHUB_APP_NAME}/installations/{self.installation_id}"
+
     def delete(self, *args, **kwargs):
         """Override delete method to remove orphaned remote organizations."""
         self.delete_repositories()
diff --git a/readthedocs/projects/migrations/0152_create_gh_app_integration.py b/readthedocs/projects/migrations/0152_create_gh_app_integration.py
new file mode 100644
index 00000000000..3806b81c286
--- /dev/null
+++ b/readthedocs/projects/migrations/0152_create_gh_app_integration.py
@@ -0,0 +1,31 @@
+# Generated by Django 5.2.3 on 2025-07-14 20:18
+from django.db import migrations
+from django_safemigrate import Safe
+
+
+def forwards_func(apps, schema_editor):
+    """Create GitHub App integration for projects connected to a GitHub App."""
+    Project = apps.get_model("projects", "Project")
+    for project in Project.objects.filter(remote_repository__vcs_provider="githubapp"):
+        integration, _ = project.integrations.get_or_create(
+            integration_type="githubapp",
+        )
+        remote_repo = project.remote_repository
+        installation = project.remote_repository.github_app_installation
+        integration.provider_data = {
+            "installation_id": installation.installation_id,
+            "repository_id": remote_repo.remote_id,
+            "repository_full_name": remote_repo.full_name,
+        }
+        integration.save()
+
+
+class Migration(migrations.Migration):
+    safe = Safe.after_deploy()
+    dependencies = [
+        ("projects", "0151_addons_linkpreviews_selector"),
+    ]
+
+    operations = [
+        migrations.RunPython(forwards_func),
+    ]
diff --git a/readthedocs/projects/signals.py b/readthedocs/projects/signals.py
index e27fc7256f5..cdb8dda1cf5 100644
--- a/readthedocs/projects/signals.py
+++ b/readthedocs/projects/signals.py
@@ -1,10 +1,14 @@
 """Project signals."""
 
+from dataclasses import asdict
+
 import django.dispatch
 import structlog
 from django.db.models.signals import post_save
 from django.dispatch import receiver
 
+from readthedocs.integrations.models import GitHubAppIntegrationProviderData
+from readthedocs.integrations.models import Integration
 from readthedocs.projects.models import AddonsConfig
 from readthedocs.projects.models import Project
 
@@ -27,3 +31,27 @@
 def create_addons_on_new_projects(instance, *args, **kwargs):
     """Create ``AddonsConfig`` on new projects."""
     AddonsConfig.objects.get_or_create(project=instance)
+
+
+@receiver(post_save, sender=Project)
+def create_integration_on_github_app_project(instance, *args, **kwargs):
+    """Create a GitHub App integration when a project is linked to a GitHub App."""
+    project = instance
+    if not project.is_github_app_project:
+        return
+
+    integration, _ = project.integrations.get_or_create(
+        integration_type=Integration.GITHUBAPP,
+    )
+    # Save some metadata about the GitHub App installation and repository,
+    # so we can know which repository the project was linked to.
+    remote_repo = project.remote_repository
+    installation = project.remote_repository.github_app_installation
+    integration.provider_data = asdict(
+        GitHubAppIntegrationProviderData(
+            installation_id=installation.installation_id,
+            repository_id=int(remote_repo.remote_id),
+            repository_full_name=remote_repo.full_name,
+        )
+    )
+    integration.save()
diff --git a/readthedocs/projects/tests/test_signals.py b/readthedocs/projects/tests/test_signals.py
new file mode 100644
index 00000000000..5e80cce24e3
--- /dev/null
+++ b/readthedocs/projects/tests/test_signals.py
@@ -0,0 +1,47 @@
+from django.contrib.auth.models import User
+from django.test import TestCase
+from django_dynamic_fixture import get
+from readthedocs.integrations.models import Integration
+from readthedocs.oauth.constants import GITHUB, GITHUB_APP
+from readthedocs.oauth.models import GitHubAppInstallation, RemoteRepository
+from readthedocs.projects.models import Project
+
+
+class TestProjectSignals(TestCase):
+    def setUp(self):
+        self.user = get(User)
+        self.project = get(Project, users=[self.user])
+
+    def test_create_github_app_integration(self):
+        github_repo = get(
+            RemoteRepository,
+            vcs_provider=GITHUB,
+        )
+        github_app_repo = get(
+            RemoteRepository,
+            vcs_provider=GITHUB_APP,
+            github_app_installation=get(GitHubAppInstallation)
+        )
+
+        assert not self.project.is_github_app_project
+        assert not self.project.integrations.exists()
+
+        # Not a GitHub App repository, no integration created.
+        self.project.remote_repository = github_repo
+        self.project.save()
+        assert not self.project.is_github_app_project
+        assert not self.project.integrations.exists()
+
+        # Now set the remote repository to a GitHub App repository.
+        self.project.remote_repository = github_app_repo
+        self.project.save()
+        assert self.project.is_github_app_project
+        integration = self.project.integrations.first()
+        assert integration.integration_type == Integration.GITHUBAPP
+
+        # Even if the connection is removed, the integration should still exist.
+        self.project.remote_repository = None
+        self.project.save()
+        assert not self.project.is_github_app_project
+        integration = self.project.integrations.first()
+        assert integration.integration_type == Integration.GITHUBAPP
diff --git a/readthedocs/projects/tests/test_views.py b/readthedocs/projects/tests/test_views.py
index 0bb45b79dca..7611ae99604 100644
--- a/readthedocs/projects/tests/test_views.py
+++ b/readthedocs/projects/tests/test_views.py
@@ -8,7 +8,7 @@
 from readthedocs.integrations.models import Integration
 from readthedocs.invitations.models import Invitation
 from readthedocs.oauth.constants import GITHUB_APP
-from readthedocs.oauth.models import RemoteRepository
+from readthedocs.oauth.models import GitHubAppInstallation, RemoteRepository
 from readthedocs.organizations.models import Organization
 from readthedocs.projects.constants import (
     DOWNLOADABLE_MEDIA_TYPES,
@@ -85,7 +85,14 @@ def test_github_integration(self):
 
     def test_github_app_integration(self):
         Integration.objects.all().delete()
-        remote_repository = get(RemoteRepository, vcs_provider=GITHUB_APP)
+        github_app_installation = get(
+            GitHubAppInstallation,
+        )
+        remote_repository = get(
+            RemoteRepository,
+            vcs_provider=GITHUB_APP,
+            github_app_installation=github_app_installation,
+        )
         self.project.remote_repository = remote_repository
         self.project.save()