diff --git a/docs/operator-manual/user-management/index.md b/docs/operator-manual/user-management/index.md
index 27426eb5cd..efcf68b020 100644
--- a/docs/operator-manual/user-management/index.md
+++ b/docs/operator-manual/user-management/index.md
@@ -599,3 +599,22 @@ Disabling certificate verification might make sense if:
 
 If either of those two applies, then you can disable OIDC provider certificate verification by setting
 `oidc.tls.insecure.skip.verify` to `"true"` in the `argocd-cm` ConfigMap.
+
+### Configurable groups claim
+
+By default, Argo CD reads user group information from the `groups` claim in the OIDC UserInfo endpoint response.
+
+Some identity providers return group membership using a different claim name such as `roles`, `memberof`, or other custom attributes.
+
+You can configure a custom claim name using the `groupsClaim` field:
+
+```yaml
+oidc.config: |
+  name: example
+  issuer: https://example.com
+  clientID: example-client-id
+  clientSecret: example-secret
+  enableUserInfoGroups: true
+  userInfoPath: /userinfo
+  groupsClaim: roles 
+```
\ No newline at end of file
diff --git a/util/oidc/oidc.go b/util/oidc/oidc.go
index d856be7e04..900aaed531 100644
--- a/util/oidc/oidc.go
+++ b/util/oidc/oidc.go
@@ -908,7 +908,11 @@ func (a *ClientApp) SetGroupsFromUserInfo(ctx context.Context, claims jwt.Claims
 		if groupClaims["sub"] != userInfo["sub"] {
 			return groupClaims, errors.New("subject of claims from user info endpoint didn't match subject of idToken, see https://openid.net/specs/openid-connect-core-1_0.html#UserInfo")
 		}
-		groupClaims["groups"] = userInfo["groups"]
+		groupsClaim := a.settings.UserInfoGroupsClaim()
+		if userInfo[groupsClaim] == nil {
+			log.Warnf("groups claim '%s' not found in UserInfo response, user will have no groups", groupsClaim)
+		}
+		groupClaims["groups"] = userInfo[groupsClaim]
 	}
 
 	return groupClaims, nil
diff --git a/util/settings/settings.go b/util/settings/settings.go
index 7894404362..1159233d9d 100644
--- a/util/settings/settings.go
+++ b/util/settings/settings.go
@@ -198,6 +198,7 @@ func (o *oidcConfig) toExported() *OIDCConfig {
 		RootCA:                   o.RootCA,
 		EnablePKCEAuthentication: o.EnablePKCEAuthentication,
 		DomainHint:               o.DomainHint,
+		GroupsClaim:              o.GroupsClaim,
 	}
 }
 
@@ -218,6 +219,7 @@ type OIDCConfig struct {
 	DomainHint               string                 `json:"domainHint,omitempty"`
 	Azure                    *AzureOIDCConfig       `json:"azure,omitempty"`
 	RefreshTokenThreshold    string                 `json:"refreshTokenThreshold,omitempty"`
+	GroupsClaim              string                 `json:"groupsClaim,omitempty"`
 }
 
 type AzureOIDCConfig struct {
@@ -2502,6 +2504,14 @@ func (mgr *SettingsManager) GetAllowedNodeLabels() []string {
 	return labelKeys
 }
 
+func (a *ArgoCDSettings) UserInfoGroupsClaim() string {
+	cfg := a.OIDCConfig()
+	if cfg != nil && cfg.GroupsClaim != "" {
+		return strings.TrimSpace(cfg.GroupsClaim)
+	}
+	return "groups"
+}
+
 // IsInClusterEnabled returns false if in-cluster is explicitly disabled in argocd-cm configmap, true otherwise
 func (mgr *SettingsManager) IsInClusterEnabled() (bool, error) {
 	argoCDCM, err := mgr.getConfigMap()
diff --git a/util/settings/settings_test.go b/util/settings/settings_test.go
index 8a3203b895..fe62a91921 100644
--- a/util/settings/settings_test.go
+++ b/util/settings/settings_test.go
@@ -2351,6 +2351,30 @@ func TestSettingsManager_GetAllowedNodeLabels(t *testing.T) {
 	}
 }
 
+func TestUserInfoGroupsClaim(t *testing.T) {
+	t.Run("should return default 'groups' when config is empty", func(t *testing.T) {
+		settings := &ArgoCDSettings{
+			OIDCConfigRAW: "",
+		}
+
+		result := settings.UserInfoGroupsClaim()
+		assert.Equal(t, "groups", result)
+	})
+
+	t.Run("should return default 'groups' when groupsClaim not present", func(t *testing.T) {
+		settings := &ArgoCDSettings{
+			OIDCConfigRAW: `{
+				"name": "test",
+				"issuer": "https://example.com",
+				"clientID": "test-client"
+			}`,
+		}
+
+		result := settings.UserInfoGroupsClaim()
+		assert.Equal(t, "groups", result)
+	})
+}
+
 func TestSecretsInformerExcludesClusterSecrets(t *testing.T) {
 	cm := &corev1.ConfigMap{
 		ObjectMeta: metav1.ObjectMeta{