diff --git a/src/sentry/utils/groupreference.py b/src/sentry/utils/groupreference.py
index 64bcdb8c9b7442..cc158e23c6e253 100644
--- a/src/sentry/utils/groupreference.py
+++ b/src/sentry/utils/groupreference.py
@@ -9,11 +9,21 @@
 _markdown_strip_re = re.compile(r"\[([^]]+)\]\([^)]+\)", re.I)
 
 _fixes_re = re.compile(
-    r"\b(?:Fix|Fixes|Fixed|Close|Closes|Closed|Resolve|Resolves|Resolved):?\s+([A-Za-z0-9_\-\s\,]+)\b",
-    re.I,
+    r"\b(?:Fix|Fixes|Fixed|Close|Closes|Closed|Resolve|Resolves|Resolved):?\s+(.+?)(?=\n\n|\Z)",
+    re.I | re.DOTALL,
 )
 _short_id_re = re.compile(r"\b([A-Z0-9_-]+-[A-Z0-9]+)\b", re.I)
 
+# Match Sentry issue URLs in various formats:
+# - https://sentry.io/organizations/{org}/issues/{id}/
+# - https://{domain}/organizations/{org}/issues/{id}/
+# - https://sentry.sentry.io/issues/{id}/
+# The ID can be either a numeric ID or a qualified short ID like SENTRY-123
+_sentry_url_re = re.compile(
+    r"https?://[^/]+(?:/organizations/[^/]+)?/issues/([A-Z0-9_-]+(?:-[A-Z0-9]+)?|\d+)/?",
+    re.I,
+)
+
 
 def find_referenced_groups(text: str | None, org_id: int) -> set[Group]:
     from sentry.models.group import Group
@@ -28,8 +38,15 @@ def find_referenced_groups(text: str | None, org_id: int) -> set[Group]:
     text = _markdown_strip_re.sub(r"\1", text)
 
     results = set()
+
+    # Look for issue references after "Fixes/Resolves/Closes" keywords
+    # This handles both short IDs (SENTRY-123) and Sentry URLs
     for fmatch in _fixes_re.finditer(text):
-        for smatch in _short_id_re.finditer(fmatch.group(1)):
+        # The captured group contains everything after the keyword
+        ref_text = fmatch.group(1)
+
+        # First, look for short IDs in "Fixes SENTRY-123" style references
+        for smatch in _short_id_re.finditer(ref_text):
             short_id = smatch.group(1)
             try:
                 group = Group.objects.by_qualified_short_id(
@@ -39,4 +56,27 @@ def find_referenced_groups(text: str | None, org_id: int) -> set[Group]:
                 continue
             else:
                 results.add(group)
+
+        # Second, look for Sentry issue URLs after "Fixes/Resolves/Closes"
+        for url_match in _sentry_url_re.finditer(ref_text):
+            issue_id = url_match.group(1)
+
+            # Try to determine if this is a short ID or numeric ID
+            if "-" in issue_id:
+                # This looks like a short ID (e.g., SENTRY-123)
+                try:
+                    group = Group.objects.by_qualified_short_id(
+                        organization_id=org_id, short_id=issue_id
+                    )
+                    results.add(group)
+                except Group.DoesNotExist:
+                    continue
+            else:
+                # This is a numeric ID
+                try:
+                    group = Group.objects.get(id=int(issue_id), project__organization_id=org_id)
+                    results.add(group)
+                except (Group.DoesNotExist, ValueError):
+                    continue
+
     return results
diff --git a/tests/sentry/models/test_commit.py b/tests/sentry/models/test_commit.py
index 52ebd4584ac992..e6470e1ac66652 100644
--- a/tests/sentry/models/test_commit.py
+++ b/tests/sentry/models/test_commit.py
@@ -95,3 +95,125 @@ def test_markdown_links(self) -> None:
         assert len(groups) == 2
         assert group in groups
         assert group2 in groups
+
+    def test_sentry_issue_url_with_numeric_id(self) -> None:
+        """Test that pasting a Sentry issue URL with numeric ID works"""
+        group = self.create_group()
+
+        repo = Repository.objects.create(name="example", organization_id=self.group.organization.id)
+
+        # Test URL with org slug format (URL on same line as Fixes)
+        commit = Commit.objects.create(
+            key=sha1(uuid4().hex.encode("utf-8")).hexdigest(),
+            repository_id=repo.id,
+            organization_id=group.organization.id,
+            message=f"Fixes https://sentry.io/organizations/test-org/issues/{group.id}/",
+        )
+
+        groups = commit.find_referenced_groups()
+        assert len(groups) == 1
+        assert group in groups
+
+    def test_sentry_issue_url_short_format(self) -> None:
+        """Test URL in short format like https://sentry.sentry.io/issues/123/"""
+        group = self.create_group()
+
+        repo = Repository.objects.create(name="example", organization_id=self.group.organization.id)
+
+        commit = Commit.objects.create(
+            key=sha1(uuid4().hex.encode("utf-8")).hexdigest(),
+            repository_id=repo.id,
+            organization_id=group.organization.id,
+            message=f"Fix n+1 issue\nhttps://sentry.sentry.io/issues/{group.id}/",
+        )
+
+        groups = commit.find_referenced_groups()
+        assert len(groups) == 1
+        assert group in groups
+
+    def test_sentry_issue_url_with_short_id(self) -> None:
+        """Test that URLs with short IDs like SENTRY-123 work"""
+        group = self.create_group()
+
+        repo = Repository.objects.create(name="example", organization_id=self.group.organization.id)
+
+        commit = Commit.objects.create(
+            key=sha1(uuid4().hex.encode("utf-8")).hexdigest(),
+            repository_id=repo.id,
+            organization_id=group.organization.id,
+            message=f"Fixes https://sentry.io/organizations/test-org/issues/{group.qualified_short_id}/",
+        )
+
+        groups = commit.find_referenced_groups()
+        assert len(groups) == 1
+        assert group in groups
+
+    def test_sentry_issue_url_without_fixes_keyword(self) -> None:
+        """Test that issue URLs require 'Fixes' keyword, just like short IDs"""
+        group = self.create_group()
+
+        repo = Repository.objects.create(name="example", organization_id=self.group.organization.id)
+
+        # URL without "Fixes" keyword should NOT be detected
+        commit = Commit.objects.create(
+            key=sha1(uuid4().hex.encode("utf-8")).hexdigest(),
+            repository_id=repo.id,
+            organization_id=group.organization.id,
+            message=f"Reduce insert # on /broadcasts/\n\nn+1 issue\nhttps://sentry.sentry.io/issues/{group.id}/",
+        )
+
+        groups = commit.find_referenced_groups()
+        assert len(groups) == 0
+
+        # But WITH "Fixes" it should work
+        commit2 = Commit.objects.create(
+            key=sha1(uuid4().hex.encode("utf-8")).hexdigest(),
+            repository_id=repo.id,
+            organization_id=group.organization.id,
+            message=f"Reduce insert # on /broadcasts/\n\nFixes n+1 issue\nhttps://sentry.sentry.io/issues/{group.id}/",
+        )
+
+        groups2 = commit2.find_referenced_groups()
+        assert len(groups2) == 1
+        assert group in groups2
+
+    def test_sentry_issue_url_multiple(self) -> None:
+        """Test multiple issue URLs in one message"""
+        group1 = self.create_group()
+        group2 = self.create_group()
+
+        repo = Repository.objects.create(name="example", organization_id=self.group.organization.id)
+
+        commit = Commit.objects.create(
+            key=sha1(uuid4().hex.encode("utf-8")).hexdigest(),
+            repository_id=repo.id,
+            organization_id=group1.organization.id,
+            message=f"Fixes multiple issues\n"
+            f"https://sentry.io/organizations/test-org/issues/{group1.id}/\n"
+            f"https://sentry.sentry.io/issues/{group2.id}/",
+        )
+
+        groups = commit.find_referenced_groups()
+        assert len(groups) == 2
+        assert group1 in groups
+        assert group2 in groups
+
+    def test_sentry_issue_url_mixed_with_short_ids(self) -> None:
+        """Test that URLs and short IDs can be mixed in the same message"""
+        group1 = self.create_group()
+        group2 = self.create_group()
+
+        repo = Repository.objects.create(name="example", organization_id=self.group.organization.id)
+
+        commit = Commit.objects.create(
+            key=sha1(uuid4().hex.encode("utf-8")).hexdigest(),
+            repository_id=repo.id,
+            organization_id=group1.organization.id,
+            message=f"Fixes {group1.qualified_short_id} and\n"
+            f"https://sentry.io/organizations/test-org/issues/{group2.id}/",
+        )
+
+        groups = commit.find_referenced_groups()
+        assert len(groups) == 2
+        assert group1 in groups
+        assert group2 in groups
diff --git a/tests/sentry/models/test_pullrequest.py b/tests/sentry/models/test_pullrequest.py
index 900c2b2cfaa8a5..8112883e850545 100644
--- a/tests/sentry/models/test_pullrequest.py
+++ b/tests/sentry/models/test_pullrequest.py
@@ -75,6 +75,47 @@ def test_resolve_in_pull_request(self) -> None:
         group.refresh_from_db()
         assert group.status == GroupStatus.UNRESOLVED
 
+    def test_resolve_with_sentry_issue_url(self) -> None:
+        """Test that pasting a Sentry issue URL in PR body associates the PR"""
+        group = self.create_group()
+        repo = Repository.objects.create(name="example", organization_id=group.organization.id)
+
+        pr = PullRequest.objects.create(
+            key="1",
+            repository_id=repo.id,
+            organization_id=group.organization.id,
+            title="Fix n+1 query issue",
+            message=f"Reduce insert # on /broadcasts/ by bulk inserting\n\n"
+            f"Fixes n+1 issue\nhttps://sentry.sentry.io/issues/{group.id}/",
+        )
+
+        groups = pr.find_referenced_groups()
+        assert len(groups) == 1
+        assert group in groups
+        # Verify GroupLink was created
+        assert GroupLink.objects.filter(
+            group=group,
+            linked_type=GroupLink.LinkedType.pull_request,
+            linked_id=pr.id,
+        ).exists()
+
+    def test_resolve_with_issue_url_and_short_id(self) -> None:
+        """Test that issue URL with qualified short ID works"""
+        group = self.create_group()
+        repo = Repository.objects.create(name="example", organization_id=group.organization.id)
+
+        pr = PullRequest.objects.create(
+            key="2",
+            repository_id=repo.id,
+            organization_id=group.organization.id,
+            title="Fix the bug",
+            message=f"Fixes https://sentry.io/organizations/test-org/issues/{group.qualified_short_id}/",
+        )
+
+        groups = pr.find_referenced_groups()
+        assert len(groups) == 1
+        assert group in groups
+
 
 class PullRequestRetentionTest(TestCase):
     def setUp(self):