diff --git a/postgresql/config.go b/postgresql/config.go
index d19ca762..89d47010 100644
--- a/postgresql/config.go
+++ b/postgresql/config.go
@@ -169,6 +169,7 @@ type ClientCertificateConfig struct {
 type Config struct {
 	Scheme                          string
 	Host                            string
+	AWSIAMDBAuthTokenHost           string
 	Port                            int
 	Username                        string
 	Password                        string
diff --git a/postgresql/provider.go b/postgresql/provider.go
index 778778be..717b115a 100644
--- a/postgresql/provider.go
+++ b/postgresql/provider.go
@@ -3,9 +3,10 @@ package postgresql
 import (
 	"context"
 	"fmt"
+	"os"
+
 	"github.com/aws/aws-sdk-go-v2/credentials"
 	"github.com/aws/aws-sdk-go-v2/service/sts"
-	"os"
 
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore/policy"
 	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
@@ -99,6 +100,13 @@ func Provider() *schema.Provider {
 				Description: "AWS IAM role to assume for IAM auth",
 			},
 
+			"aws_rds_iam_token_host": {
+				Type:        schema.TypeString,
+				Optional:    true,
+				DefaultFunc: schema.EnvDefaultFunc("PGHOST", nil),
+				Description: "Name of PostgreSQL server address for AWS RDS IAM to get token",
+			},
+
 			"azure_identity_auth": {
 				Type:     schema.TypeBool,
 				Optional: true,
@@ -349,11 +357,16 @@ func providerConfigure(d *schema.ResourceData) (any, error) {
 
 	var password string
 	if d.Get("aws_rds_iam_auth").(bool) {
+		awsIAMTokenHost := d.Get("aws_rds_iam_token_host").(string)
+		if awsIAMTokenHost == "" {
+			awsIAMTokenHost = host
+		}
+
 		profile := d.Get("aws_rds_iam_profile").(string)
 		region := d.Get("aws_rds_iam_region").(string)
 		role := d.Get("aws_rds_iam_provider_role_arn").(string)
 		var err error
-		password, err = getRDSAuthToken(region, profile, role, username, host, port)
+		password, err = getRDSAuthToken(region, profile, role, username, awsIAMTokenHost, port)
 		if err != nil {
 			return nil, err
 		}
@@ -374,6 +387,7 @@ func providerConfigure(d *schema.ResourceData) (any, error) {
 	config := Config{
 		Scheme:                          d.Get("scheme").(string),
 		Host:                            host,
+		AWSIAMDBAuthTokenHost:           awsIAMTokenHost,
 		Port:                            port,
 		Username:                        username,
 		Password:                        password,