diff --git a/pgdog/src/net/stream.rs b/pgdog/src/net/stream.rs
index 796be2fd2..81b35605b 100644
--- a/pgdog/src/net/stream.rs
+++ b/pgdog/src/net/stream.rs
@@ -147,7 +147,7 @@ impl Stream {
         }
     }
 
-    /// Get the hostname identity (SAN dNSName, falling back to Subject CN)
+    /// Get the identity (SAN dNSName, then SAN URI, falling back to Subject CN)
     /// from the client's TLS certificate, if any.
     pub(crate) fn tls_identity(&self) -> Option<&str> {
         self.tls_identity.as_deref()
diff --git a/pgdog/src/net/tls.rs b/pgdog/src/net/tls.rs
index c643cb1b1..ce1dc2910 100644
--- a/pgdog/src/net/tls.rs
+++ b/pgdog/src/net/tls.rs
@@ -218,7 +218,7 @@ pub(crate) fn tls_server_end_point(cert: &CertificateDer<'_>) -> Option<Vec<u8>>
     Some(digest(algorithm, cert.as_ref()).as_ref().to_vec())
 }
 
-/// Extract the hostname identity from the peer's TLS certificate, if present.
+/// Extract the identity from the peer's TLS certificate, if present.
 pub(crate) fn peer_identity(conn: &ServerConnection) -> Option<String> {
     identity_from_certs(conn.peer_certificates()?)
 }
@@ -230,11 +230,16 @@ pub(crate) fn peer_certificate_present(conn: &ServerConnection) -> bool {
         .is_some_and(|certs| !certs.is_empty())
 }
 
-/// Extract a hostname identity from the first certificate in the chain.
+/// Extract an identity from the first certificate in the chain.
 ///
-/// Prefers the first `dNSName` in the Subject Alternative Name extension and
-/// falls back to the Subject CN. RFC 6125 deprecated CN for hostname identity,
-/// and modern certificates often publish identity only via SAN.
+/// Prefers the first `dNSName` in the Subject Alternative Name extension, then
+/// the first `uniformResourceIdentifier`, and falls back to the Subject CN.
+/// RFC 6125 deprecated CN for identity, and modern certificates often publish
+/// it only via SAN.
+///
+/// The URI is matched verbatim, with no scheme-specific parsing: workload
+/// identity platforms (SPIFFE, SPIRE, Istio, GKE) assert identity as a
+/// `spiffe://` URI and issue no `dNSName`.
 pub(crate) fn identity_from_certs(certs: &[CertificateDer<'_>]) -> Option<String> {
     use x509_parser::certificate::X509Certificate;
     use x509_parser::extensions::GeneralName;
@@ -243,12 +248,19 @@ pub(crate) fn identity_from_certs(certs: &[CertificateDer<'_>]) -> Option<String
     let (_, cert) = X509Certificate::from_der(cert_der).ok()?;
 
     if let Ok(Some(san)) = cert.subject_alternative_name() {
-        let dns_name = san.value.general_names.iter().find_map(|gn| match gn {
-            GeneralName::DNSName(name) => Some((*name).to_string()),
+        let names = &san.value.general_names;
+        let dns_name = names.iter().find_map(|gn| match gn {
+            GeneralName::DNSName(name) => Some(*name),
             _ => None,
         });
-        if dns_name.is_some() {
-            return dns_name;
+        let identity = dns_name.or_else(|| {
+            names.iter().find_map(|gn| match gn {
+                GeneralName::URI(uri) => Some(*uri),
+                _ => None,
+            })
+        });
+        if let Some(identity) = identity {
+            return Some(identity.to_string());
         }
     }
 
@@ -1393,6 +1405,38 @@ mod tests {
         );
     }
 
+    #[test]
+    fn san_uri_used_when_no_dns_name() {
+        let pem = include_str!("../../tests/tls/cert_san_uri_only.pem");
+        let certs: Vec<CertificateDer<'static>> =
+            rustls_pki_types::CertificateDer::pem_slice_iter(pem.as_bytes())
+                .collect::<Result<Vec<_>, _>>()
+                .expect("parse PEM");
+
+        // No dNSName and no CN: a workload identity certificate names itself
+        // with a URI only.
+        assert_eq!(
+            identity_from_certs(&certs).as_deref(),
+            Some("spiffe://example.svc.id.goog/ns/dashboard/sa/webapp")
+        );
+    }
+
+    #[test]
+    fn san_dns_preferred_over_san_uri() {
+        let pem = include_str!("../../tests/tls/cert_san_uri_and_dns.pem");
+        let certs: Vec<CertificateDer<'static>> =
+            rustls_pki_types::CertificateDer::pem_slice_iter(pem.as_bytes())
+                .collect::<Result<Vec<_>, _>>()
+                .expect("parse PEM");
+
+        // The URI comes first in the SAN, but dNSName still wins so
+        // certificates that resolve today keep resolving the same way.
+        assert_eq!(
+            identity_from_certs(&certs).as_deref(),
+            Some("primary.san.example")
+        );
+    }
+
     #[test]
     fn load_ca_bundle_loads_full_chain() {
         crate::logger();
diff --git a/pgdog/tests/tls/cert_san_uri_and_dns.pem b/pgdog/tests/tls/cert_san_uri_and_dns.pem
new file mode 100644
index 000000000..86da6353b
--- /dev/null
+++ b/pgdog/tests/tls/cert_san_uri_and_dns.pem
@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/pgdog/tests/tls/cert_san_uri_only.pem b/pgdog/tests/tls/cert_san_uri_only.pem
new file mode 100644
index 000000000..e42adfe61
--- /dev/null
+++ b/pgdog/tests/tls/cert_san_uri_only.pem
@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----