diff --git a/api/v1alpha1/policy_helpers.go b/api/v1alpha1/policy_helpers.go
index 054ca72f71..d27064b400 100644
--- a/api/v1alpha1/policy_helpers.go
+++ b/api/v1alpha1/policy_helpers.go
@@ -38,6 +38,29 @@ type TargetSelector struct {
 
 	// MatchLabels are the set of label selectors for identifying the targeted resource
 	MatchLabels map[string]string `json:"matchLabels"`
+
+	// Namespaces determines if the resource from all namespaces or the current namespace
+	// are considered when matching by label selectors specified in MatchLabels.
+	// Note: when referencing targets in a different namespace, appropriate ReferenceGrants must be
+	// configured to allow the selection.
+	// +optional
+	// +notImplementedHide
+	Namespaces *TargetSelectorNamespaces `json:"namespaces,omitempty"`
+}
+
+type FromNamespaces string
+
+const (
+	// FromNamespacesAll indicates that the target selector should apply to targets from all namespaces
+	FromNamespacesAll FromNamespaces = "All"
+)
+
+// TargetSelectorNamespaces determines which namespaces are used when selecting policy targets.
+type TargetSelectorNamespaces struct {
+	// Indicates where targets would be selected for the Policy's TargetSelector.
+	// +kubebuilder:validation:Enum=All
+	// +kubebuilder:validation:Required
+	FromNamespaces FromNamespaces `json:"from,omitempty"`
 }
 
 func (p PolicyTargetReferences) GetTargetRefs() []gwapiv1a2.LocalPolicyTargetReferenceWithSectionName {
diff --git a/api/v1alpha1/zz_generated.deepcopy.go b/api/v1alpha1/zz_generated.deepcopy.go
index 69531024a7..54966b2ad0 100644
--- a/api/v1alpha1/zz_generated.deepcopy.go
+++ b/api/v1alpha1/zz_generated.deepcopy.go
@@ -5667,6 +5667,11 @@ func (in *TargetSelector) DeepCopyInto(out *TargetSelector) {
 			(*out)[key] = val
 		}
 	}
+	if in.Namespaces != nil {
+		in, out := &in.Namespaces, &out.Namespaces
+		*out = new(TargetSelectorNamespaces)
+		**out = **in
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TargetSelector.
@@ -5679,6 +5684,21 @@ func (in *TargetSelector) DeepCopy() *TargetSelector {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TargetSelectorNamespaces) DeepCopyInto(out *TargetSelectorNamespaces) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TargetSelectorNamespaces.
+func (in *TargetSelectorNamespaces) DeepCopy() *TargetSelectorNamespaces {
+	if in == nil {
+		return nil
+	}
+	out := new(TargetSelectorNamespaces)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *Timeout) DeepCopyInto(out *Timeout) {
 	*out = *in
diff --git a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_backendtrafficpolicies.yaml b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_backendtrafficpolicies.yaml
index 6808e7992e..ca843b7791 100644
--- a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_backendtrafficpolicies.yaml
+++ b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_backendtrafficpolicies.yaml
@@ -1514,6 +1514,22 @@ spec:
                       description: MatchLabels are the set of label selectors for
                         identifying the targeted resource
                       type: object
+                    namespaces:
+                      description: |-
+                        Namespaces determines if the resource from all namespaces or the current namespace
+                        are considered when matching by label selectors specified in MatchLabels.
+                        Note: when referencing targets in a different namespace, appropriate ReferenceGrants must be
+                        configured to allow the selection.
+                      properties:
+                        from:
+                          description: Indicates where targets would be selected for
+                            the Policy's TargetSelector.
+                          enum:
+                          - All
+                          type: string
+                      required:
+                      - from
+                      type: object
                   required:
                   - kind
                   - matchLabels
diff --git a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_clienttrafficpolicies.yaml b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_clienttrafficpolicies.yaml
index ebeba3ae17..c6734cd8fe 100644
--- a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_clienttrafficpolicies.yaml
+++ b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_clienttrafficpolicies.yaml
@@ -614,6 +614,22 @@ spec:
                       description: MatchLabels are the set of label selectors for
                         identifying the targeted resource
                       type: object
+                    namespaces:
+                      description: |-
+                        Namespaces determines if the resource from all namespaces or the current namespace
+                        are considered when matching by label selectors specified in MatchLabels.
+                        Note: when referencing targets in a different namespace, appropriate ReferenceGrants must be
+                        configured to allow the selection.
+                      properties:
+                        from:
+                          description: Indicates where targets would be selected for
+                            the Policy's TargetSelector.
+                          enum:
+                          - All
+                          type: string
+                      required:
+                      - from
+                      type: object
                   required:
                   - kind
                   - matchLabels
diff --git a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml
index 6036db8264..0c7e5408ee 100644
--- a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml
+++ b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml
@@ -1207,6 +1207,22 @@ spec:
                       description: MatchLabels are the set of label selectors for
                         identifying the targeted resource
                       type: object
+                    namespaces:
+                      description: |-
+                        Namespaces determines if the resource from all namespaces or the current namespace
+                        are considered when matching by label selectors specified in MatchLabels.
+                        Note: when referencing targets in a different namespace, appropriate ReferenceGrants must be
+                        configured to allow the selection.
+                      properties:
+                        from:
+                          description: Indicates where targets would be selected for
+                            the Policy's TargetSelector.
+                          enum:
+                          - All
+                          type: string
+                      required:
+                      - from
+                      type: object
                   required:
                   - kind
                   - matchLabels
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 bc228f30f6..0f53b7a525 100644
--- a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_securitypolicies.yaml
+++ b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_securitypolicies.yaml
@@ -4453,6 +4453,22 @@ spec:
                       description: MatchLabels are the set of label selectors for
                         identifying the targeted resource
                       type: object
+                    namespaces:
+                      description: |-
+                        Namespaces determines if the resource from all namespaces or the current namespace
+                        are considered when matching by label selectors specified in MatchLabels.
+                        Note: when referencing targets in a different namespace, appropriate ReferenceGrants must be
+                        configured to allow the selection.
+                      properties:
+                        from:
+                          description: Indicates where targets would be selected for
+                            the Policy's TargetSelector.
+                          enum:
+                          - All
+                          type: string
+                      required:
+                      - from
+                      type: object
                   required:
                   - kind
                   - matchLabels
diff --git a/site/content/en/latest/api/extension_types.md b/site/content/en/latest/api/extension_types.md
index 12181f7cc3..c876ac759d 100644
--- a/site/content/en/latest/api/extension_types.md
+++ b/site/content/en/latest/api/extension_types.md
@@ -1801,6 +1801,20 @@ _Appears in:_
 | `after` | _[EnvoyFilter](#envoyfilter)_ |  true  |  | After defines the filter that should come after the filter.<br />Only one of Before or After must be set. |
 
 
+#### FromNamespaces
+
+_Underlying type:_ _string_
+
+
+
+_Appears in:_
+- [TargetSelectorNamespaces](#targetselectornamespaces)
+
+| Value | Description |
+| ----- | ----------- |
+| `All` | FromNamespacesAll indicates that the target selector should apply to targets from all namespaces<br /> | 
+
+
 #### GRPCActiveHealthChecker
 
 
@@ -4299,6 +4313,20 @@ _Appears in:_
 | `matchLabels` | _object (keys:string, values:string)_ |  true  |  | MatchLabels are the set of label selectors for identifying the targeted resource |
 
 
+#### TargetSelectorNamespaces
+
+
+
+TargetSelectorNamespaces determines which namespaces are used when selecting policy targets.
+
+_Appears in:_
+- [TargetSelector](#targetselector)
+
+| Field | Type | Required | Default | Description |
+| ---   | ---  | ---      | ---     | ---         |
+| `from` | _[FromNamespaces](#fromnamespaces)_ |  true  |  | Indicates where targets would be selected for the Policy's TargetSelector. |
+
+
 #### Timeout
 
 
diff --git a/site/content/zh/latest/api/extension_types.md b/site/content/zh/latest/api/extension_types.md
index 12181f7cc3..c876ac759d 100644
--- a/site/content/zh/latest/api/extension_types.md
+++ b/site/content/zh/latest/api/extension_types.md
@@ -1801,6 +1801,20 @@ _Appears in:_
 | `after` | _[EnvoyFilter](#envoyfilter)_ |  true  |  | After defines the filter that should come after the filter.<br />Only one of Before or After must be set. |
 
 
+#### FromNamespaces
+
+_Underlying type:_ _string_
+
+
+
+_Appears in:_
+- [TargetSelectorNamespaces](#targetselectornamespaces)
+
+| Value | Description |
+| ----- | ----------- |
+| `All` | FromNamespacesAll indicates that the target selector should apply to targets from all namespaces<br /> | 
+
+
 #### GRPCActiveHealthChecker
 
 
@@ -4299,6 +4313,20 @@ _Appears in:_
 | `matchLabels` | _object (keys:string, values:string)_ |  true  |  | MatchLabels are the set of label selectors for identifying the targeted resource |
 
 
+#### TargetSelectorNamespaces
+
+
+
+TargetSelectorNamespaces determines which namespaces are used when selecting policy targets.
+
+_Appears in:_
+- [TargetSelector](#targetselector)
+
+| Field | Type | Required | Default | Description |
+| ---   | ---  | ---      | ---     | ---         |
+| `from` | _[FromNamespaces](#fromnamespaces)_ |  true  |  | Indicates where targets would be selected for the Policy's TargetSelector. |
+
+
 #### Timeout