diff --git a/reviewboard/certs/cert.py b/reviewboard/certs/cert.py
index 10f82d3925bcc91c3ebd1e268c7cb34b26d8dff9..da35b6ceff4be1f013701977d5396d21c5494d32 100644
--- a/reviewboard/certs/cert.py
+++ b/reviewboard/certs/cert.py
@@ -32,6 +32,7 @@ from reviewboard.certs.errors import (CertificateNotFoundError,
                                       InvalidCertificateFormatError)
 
 if TYPE_CHECKING:
+    from collections.abc import Sequence
     from typing import TypeVar
 
     from typelets.django.json import (SerializableDjangoJSONDict,
@@ -801,6 +802,46 @@ class Certificate:
 
         return subject
 
+    @cached_property
+    def subject_alternative_names(self) -> Sequence[str]:
+        """The Subject Alternative Names of the certificate.
+
+        This will include the string values for any DNS and IP addresses
+        found in the Subject Alternative Names extension of the certificate,
+        if present.
+
+        Version Added:
+            8.0
+
+        Type:
+            list of str
+        """
+        x509_cert = self.x509_cert
+
+        if not x509_cert:
+            return []
+
+        try:
+            san_ext = (
+                x509_cert.extensions
+                .get_extension_for_class(x509.SubjectAlternativeName)
+            )
+
+            return [
+                str(item.value)
+                for item in san_ext.value
+                if isinstance(item, (x509.DNSName, x509.IPAddress))
+            ]
+        except x509.ExtensionNotFound:
+            # The extension wasn't found in the cert, so return an empty list.
+            return []
+        except Exception as e:
+            logger.exception('Unexpected error retrieving SAN values for '
+                             'x509 cert %r: %s',
+                             x509_cert, e)
+
+            return []
+
     @property
     def issuer(self) -> str | None:
         """The issuer of the certificate.
diff --git a/reviewboard/certs/tests/test_certificate.py b/reviewboard/certs/tests/test_certificate.py
index 81640f9c786bc8e37659c73378b3ff8dcc5b9201..1cb387fb40431e9bac8f1bb76f2c709ad8f5f222 100644
--- a/reviewboard/certs/tests/test_certificate.py
+++ b/reviewboard/certs/tests/test_certificate.py
@@ -281,6 +281,7 @@ class CertificateTests(kgb.SpyAgency, CertificateTestCase):
         self.assertIsNone(cert.fingerprints)
         self.assertIsNone(cert.issuer)
         self.assertIsNone(cert.subject)
+        self.assertEqual(cert.subject_alternative_names, [])
         self.assertIsNone(cert.valid_from)
         self.assertIsNone(cert.valid_through)
 
@@ -301,6 +302,7 @@ class CertificateTests(kgb.SpyAgency, CertificateTestCase):
 
         self.assertEqual(cert.subject, 'Subject')
         self.assertEqual(cert.issuer, 'Issuer')
+        self.assertEqual(cert.subject_alternative_names, [])
         self.assertEqual(cert.valid_from,
                          datetime(2023, 7, 14, 7, 50, 30, tzinfo=timezone.utc))
         self.assertEqual(cert.valid_through,
@@ -320,6 +322,7 @@ class CertificateTests(kgb.SpyAgency, CertificateTestCase):
 
         self.assertEqual(cert.subject, 'example.com')
         self.assertEqual(cert.issuer, 'example.com')
+        self.assertEqual(cert.subject_alternative_names, [])
         self.assertEqual(cert.valid_from,
                          datetime(2023, 7, 14, 7, 50, 30, tzinfo=timezone.utc))
         self.assertEqual(cert.valid_through,
@@ -334,6 +337,44 @@ class CertificateTests(kgb.SpyAgency, CertificateTestCase):
         # This should be cached.
         self.assertIs(cert.fingerprints, fingerprints)
 
+    def test_attr_x509_subject_alt_names(self) -> None:
+        """Testing Certificate.subject_alternative_names"""
+        cert = Certificate(
+            hostname='example.com',
+            port=443,
+            cert_data=b"""-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----""")
+
+        self.assertEqual(cert.subject_alternative_names, [
+            'localhost',
+            '127.0.0.1',
+            '::1',
+        ])
+
     def test_is_valid_with_not_expired(self) -> None:
         """Testing Certificate.is_valid with not expired"""
         cert_data = self.build_x509_cert_pem()