diff --git a/pkg/apis/eksctl.io/v1alpha5/partitions.go b/pkg/apis/eksctl.io/v1alpha5/partitions.go
index 09433d73db..1bc9b82e46 100644
--- a/pkg/apis/eksctl.io/v1alpha5/partitions.go
+++ b/pkg/apis/eksctl.io/v1alpha5/partitions.go
@@ -61,7 +61,7 @@ var Partitions = partitions{
 			"EKS":            "eks.amazonaws.com",
 			"EKSFargatePods": "eks-fargate-pods.amazonaws.com",
 		},
-		regions:                     []string{RegionUSISOEast1},
+		regions:                     []string{RegionUSISOEast1, RegionUSISOWest1},
 		endpointServiceDomainPrefix: "gov.ic.c2s",
 	},
 	{
diff --git a/pkg/apis/eksctl.io/v1alpha5/types.go b/pkg/apis/eksctl.io/v1alpha5/types.go
index c4e280b1ed..272f8d9042 100644
--- a/pkg/apis/eksctl.io/v1alpha5/types.go
+++ b/pkg/apis/eksctl.io/v1alpha5/types.go
@@ -204,6 +204,9 @@ const (
 	// RegionUSISOBEast1 represents the region US ISOB East (Ohio).
 	RegionUSISOBEast1 = "us-isob-east-1"
 
+	// RegionUSISOWest1 represents the region US ISOB West.
+	RegionUSISOWest1 = "us-iso-west-1"
+
 	// DefaultRegion defines the default region, where to deploy the EKS cluster
 	DefaultRegion = RegionUSWest2
 )
@@ -366,6 +369,9 @@ const (
 
 	// eksResourceAccountUSISOBEast1 defines the AWS EKS account ID that provides node resources in us-isob-east-1
 	eksResourceAccountUSISOBEast1 = "187977181151"
+
+	// eksResourceAccountUSISOWest1 defines the AWS EKS account ID that provides node resources in us-iso-west-1
+	eksResourceAccountUSISOWest1 = "608367168043"
 )
 
 // Values for `VolumeType`
@@ -512,6 +518,7 @@ func SupportedRegions() []string {
 		RegionUSGovEast1,
 		RegionUSISOEast1,
 		RegionUSISOBEast1,
+		RegionUSISOWest1,
 	}
 }
 
@@ -641,6 +648,8 @@ func EKSResourceAccountID(region string) string {
 		return eksResourceAccountUSISOEast1
 	case RegionUSISOBEast1:
 		return eksResourceAccountUSISOBEast1
+	case RegionUSISOWest1:
+		return eksResourceAccountUSISOWest1
 	default:
 		return eksResourceAccountStandard
 	}