diff --git a/fastly/resource_fastly_tls_mutual_authentication.go b/fastly/resource_fastly_tls_mutual_authentication.go
index e69708925..76ed59059 100644
--- a/fastly/resource_fastly_tls_mutual_authentication.go
+++ b/fastly/resource_fastly_tls_mutual_authentication.go
@@ -2,9 +2,12 @@ package fastly
 
 import (
 	"context"
+        "fmt"
 	"log"
 	"sort"
 
+        gofastly "github.com/fastly/go-fastly/v8/fastly"
+        "github.com/hashicorp/go-cty/cty"
 	"github.com/fastly/go-fastly/v8/fastly"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
@@ -104,7 +107,19 @@ func resourceFastlyTLSMutualAuthenticationRead(_ context.Context, d *schema.Reso
 	log.Printf("[DEBUG] REFRESH: TLS Mutual Authentication input: %#v", input)
 
 	tma, err := conn.GetTLSMutualAuthentication(input)
+
 	if err != nil {
+        	if err, ok := err.(*gofastly.HTTPError); ok && err.IsNotFound() {
+        	        id := d.Id()
+        	        d.SetId("")
+        	        return diag.Diagnostics{
+        	                diag.Diagnostic{
+        	                        Severity:      diag.Warning,
+        	                        Summary:       fmt.Sprintf("TLS Mutual Authentication (%s) not found - removing from state", id),
+        	                        AttributePath: cty.Path{cty.GetAttrStep{Name: id}},
+        	                },
+        	        }
+        	}
 		return diag.FromErr(err)
 	}