diff --git a/CHANGELOG.md b/CHANGELOG.md
index a1687cf72be..21ef520b1c3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -41,6 +41,7 @@
 - Add support to get connection data from Trigger Authorization in MSSQL Scaler ([#2112](https://github.com/kedacore/keda/pull/2112))
 - Add support to get connection data from Trigger Authorization in PostgreSQL Scaler ([#2114](https://github.com/kedacore/keda/pull/2114))
 - Add support to provide the metric name in Azure Log Analytics Scaler ([#2106](https://github.com/kedacore/keda/pull/2106))
+- Provide support for configuring authentication through TriggerAuthentication for Stan scaler ([#2167](https://github.com/kedacore/keda/pull/2167))
 - Add `pageSize` (using regex) in RabbitMQ Scaler ([#2162](https://github.com/kedacore/keda/pull/2162))
 - Add `unsafeSsl` parameter in InfluxDB scaler ([#2157](https://github.com/kedacore/keda/pull/2157))
 
diff --git a/pkg/scalers/stan_scaler.go b/pkg/scalers/stan_scaler.go
index 64d521af751..ccef2a47d81 100644
--- a/pkg/scalers/stan_scaler.go
+++ b/pkg/scalers/stan_scaler.go
@@ -75,11 +75,11 @@ func NewStanScaler(config *ScalerConfig) (Scaler, error) {
 
 func parseStanMetadata(config *ScalerConfig) (stanMetadata, error) {
 	meta := stanMetadata{}
-
-	if config.TriggerMetadata["natsServerMonitoringEndpoint"] == "" {
-		return meta, errors.New("no monitoring endpoint given")
+	var err error
+	meta.natsServerMonitoringEndpoint, err = GetFromAuthOrMeta(config, "natsServerMonitoringEndpoint")
+	if err != nil {
+		return meta, err
 	}
-	meta.natsServerMonitoringEndpoint = config.TriggerMetadata["natsServerMonitoringEndpoint"]
 
 	if config.TriggerMetadata["queueGroup"] == "" {
 		return meta, errors.New("no queue group given")
diff --git a/pkg/scalers/stan_scaler_test.go b/pkg/scalers/stan_scaler_test.go
index d1915d005d3..0619c8b6319 100644
--- a/pkg/scalers/stan_scaler_test.go
+++ b/pkg/scalers/stan_scaler_test.go
@@ -6,8 +6,9 @@ import (
 )
 
 type parseStanMetadataTestData struct {
-	metadata map[string]string
-	isError  bool
+	metadata   map[string]string
+	authParams map[string]string
+	isError    bool
 }
 
 type stanMetricIdentifier struct {
@@ -17,15 +18,19 @@ type stanMetricIdentifier struct {
 
 var testStanMetadata = []parseStanMetadataTestData{
 	// nothing passed
-	{map[string]string{}, true},
+	{map[string]string{}, map[string]string{}, true},
 	// Missing subject name, should fail
-	{map[string]string{"natsServerMonitoringEndpoint": "stan-nats-ss", "queueGroup": "grp1", "durableName": "ImDurable"}, true},
+	{map[string]string{"natsServerMonitoringEndpoint": "stan-nats-ss", "queueGroup": "grp1", "durableName": "ImDurable"}, map[string]string{}, true},
 	// Missing durable name, should fail
-	{map[string]string{"natsServerMonitoringEndpoint": "stan-nats-ss", "queueGroup": "grp1", "subject": "mySubject"}, true},
+	{map[string]string{"natsServerMonitoringEndpoint": "stan-nats-ss", "queueGroup": "grp1", "subject": "mySubject"}, map[string]string{}, true},
 	// Missing nats server monitoring endpoint, should fail
-	{map[string]string{"queueGroup": "grp1", "subject": "mySubject"}, true},
+	{map[string]string{"queueGroup": "grp1", "subject": "mySubject"}, map[string]string{}, true},
 	// All good.
-	{map[string]string{"natsServerMonitoringEndpoint": "stan-nats-ss", "queueGroup": "grp1", "durableName": "ImDurable", "subject": "mySubject"}, false},
+	{map[string]string{"natsServerMonitoringEndpoint": "stan-nats-ss", "queueGroup": "grp1", "durableName": "ImDurable", "subject": "mySubject"}, map[string]string{}, false},
+	// natsServerMonitoringEndpoint is defined in authParams
+	{map[string]string{"queueGroup": "grp1", "durableName": "ImDurable", "subject": "mySubject"}, map[string]string{"natsServerMonitoringEndpoint": "stan-nats-ss"}, false},
+	// Missing nats server monitoring endpoint , should fail
+	{map[string]string{"queueGroup": "grp1", "durableName": "ImDurable", "subject": "mySubject"}, map[string]string{"natsServerMonitoringEndpoint": ""}, true},
 }
 
 var stanMetricIdentifiers = []stanMetricIdentifier{
@@ -34,11 +39,10 @@ var stanMetricIdentifiers = []stanMetricIdentifier{
 
 func TestStanParseMetadata(t *testing.T) {
 	for _, testData := range testStanMetadata {
-		_, err := parseStanMetadata(&ScalerConfig{TriggerMetadata: testData.metadata})
+		_, err := parseStanMetadata(&ScalerConfig{TriggerMetadata: testData.metadata, AuthParams: testData.authParams})
 		if err != nil && !testData.isError {
 			t.Error("Expected success but got error", err)
-		}
-		if testData.isError && err == nil {
+		} else if testData.isError && err == nil {
 			t.Error("Expected error but got success")
 		}
 	}