diff --git a/api/v1alpha1/oidc_types.go b/api/v1alpha1/oidc_types.go
index ecce79576278..00a6e485e2c3 100644
--- a/api/v1alpha1/oidc_types.go
+++ b/api/v1alpha1/oidc_types.go
@@ -30,6 +30,11 @@ type OIDC struct {
 	// +kubebuilder:validation:Required
 	ClientSecret gwapiv1b1.SecretObjectReference `json:"clientSecret"`
 
+	// The optional cookie suffix to be added to Bearer and IdToken cookies in the
+	// [Authentication Request](https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest).
+	// If not specified, uses a randomly generated suffix
+	CookieSuffix *string `json:"cookieSuffix,omitempty"`
+
 	// The OIDC scopes to be used in the
 	// [Authentication Request](https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest).
 	// The "openid" scope is always added to the list of scopes if not already
diff --git a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_securitypolicies.yaml b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_securitypolicies.yaml
index 2758a9c2524d..53e03bdca941 100644
--- a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_securitypolicies.yaml
+++ b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_securitypolicies.yaml
@@ -618,6 +618,12 @@ spec:
                     required:
                     - name
                     type: object
+                  cookieSuffix:
+                    description: |-
+                      The optional cookie suffix to be added to Bearer and IdToken cookies in the
+                      [Authentication Request](https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest).
+                      If not specified, uses a randomly generated suffix
+                    type: string
                   logoutPath:
                     description: |-
                       The path to log a user out, clearing their credential cookies.
diff --git a/internal/gatewayapi/securitypolicy.go b/internal/gatewayapi/securitypolicy.go
index f03e46590db3..ce529dda9afb 100644
--- a/internal/gatewayapi/securitypolicy.go
+++ b/internal/gatewayapi/securitypolicy.go
@@ -588,8 +588,13 @@ func (t *Translator) buildOIDC(
 		logoutPath = *oidc.LogoutPath
 	}
 
-	// Generate a unique cookie suffix for oauth filters
+	// Generate a unique cookie suffix for oauth filters if CookieSuffix is not provided
+	// This is to avoid cookie name collision when multiple security policies are applied
+	// to the same route.
 	suffix := utils.Digest32(string(policy.UID))
+	if oidc.CookieSuffix != nil {
+		suffix = *oidc.CookieSuffix
+	}
 
 	// Get the HMAC secret
 	// HMAC secret is generated by the CertGen job and stored in a secret
diff --git a/site/content/en/latest/api/extension_types.md b/site/content/en/latest/api/extension_types.md
index 2b259ff865d6..fb39826488e7 100644
--- a/site/content/en/latest/api/extension_types.md
+++ b/site/content/en/latest/api/extension_types.md
@@ -2080,6 +2080,7 @@ _Appears in:_
 | `provider` | _[OIDCProvider](#oidcprovider)_ |  true  | The OIDC Provider configuration. |
 | `clientID` | _string_ |  true  | The client ID to be used in the OIDC<br />[Authentication Request](https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest). |
 | `clientSecret` | _[SecretObjectReference](https://gateway-api.sigs.k8s.io/references/spec/#gateway.networking.k8s.io/v1.SecretObjectReference)_ |  true  | The Kubernetes secret which contains the OIDC client secret to be used in the<br />[Authentication Request](https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest).<br /><br />This is an Opaque secret. The client secret should be stored in the key<br />"client-secret". |
+| `cookieSuffix` | _string_ |  false  | The optional cookie suffix to be added to Bearer and IdToken cookies in the [Authentication Request](https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest). If not specified, uses a randomly generated suffix |
 | `scopes` | _string array_ |  false  | The OIDC scopes to be used in the<br />[Authentication Request](https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest).<br />The "openid" scope is always added to the list of scopes if not already<br />specified. |
 | `resources` | _string array_ |  false  | The OIDC resources to be used in the<br />[Authentication Request](https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest). |
 | `redirectURL` | _string_ |  true  | The redirect URL to be used in the OIDC<br />[Authentication Request](https://openid.net/specs/openid-connect-core-1_0.html#AuthRequest).<br />If not specified, uses the default redirect URI "%REQ(x-forwarded-proto)%://%REQ(:authority)%/oauth2/callback" |