diff --git a/applicationset/generators/cluster.go b/applicationset/generators/cluster.go
index e3c98f95be84ca..db9b7a2e9d4a8c 100644
--- a/applicationset/generators/cluster.go
+++ b/applicationset/generators/cluster.go
@@ -107,6 +107,7 @@ func (g *ClusterGenerator) GenerateParams(appSetGenerator *argoappsetv1alpha1.Ap
 			params["name"] = cluster.Name
 			params["nameNormalized"] = cluster.Name
 			params["server"] = cluster.Server
+			params["project"] = "default"
 
 			err = appendTemplatedValues(appSetGenerator.Clusters.Values, params, appSet.Spec.GoTemplate, appSet.Spec.GoTemplateOptions)
 			if err != nil {
@@ -131,6 +132,13 @@ func (g *ClusterGenerator) GenerateParams(appSetGenerator *argoappsetv1alpha1.Ap
 		params["nameNormalized"] = utils.SanitizeName(string(cluster.Data["name"]))
 		params["server"] = string(cluster.Data["server"])
 
+		project, ok := cluster.Data["project"]
+		if ok {
+			params["project"] = string(project)
+		} else {
+			params["project"] = "default"
+		}
+
 		if appSet.Spec.GoTemplate {
 			meta := map[string]interface{}{}
 
diff --git a/applicationset/generators/cluster_test.go b/applicationset/generators/cluster_test.go
index 09187f56569d37..7daa9338c25425 100644
--- a/applicationset/generators/cluster_test.go
+++ b/applicationset/generators/cluster_test.go
@@ -76,9 +76,10 @@ func TestGenerateParams(t *testing.T) {
 				},
 			},
 			Data: map[string][]byte{
-				"config": []byte("{}"),
-				"name":   []byte("production_01/west"),
-				"server": []byte("https://production-01.example.com"),
+				"config":  []byte("{}"),
+				"name":    []byte("production_01/west"),
+				"server":  []byte("https://production-01.example.com"),
+				"project": []byte("prod-project"),
 			},
 			Type: corev1.SecretType("Opaque"),
 		},
@@ -106,15 +107,15 @@ func TestGenerateParams(t *testing.T) {
 				"aaa":   "{{ server }}",
 				"no-op": "{{ this-does-not-exist }}",
 			}, expected: []map[string]interface{}{
-				{"values.lol1": "lol", "values.lol2": "{{values.lol1}}{{values.lol1}}", "values.lol3": "{{values.lol2}}{{values.lol2}}{{values.lol2}}", "values.foo": "bar", "values.bar": "{{ metadata.annotations.foo.argoproj.io }}", "values.no-op": "{{ this-does-not-exist }}", "values.bat": "{{ metadata.labels.environment }}", "values.aaa": "https://kubernetes.default.svc", "nameNormalized": "in-cluster", "name": "in-cluster", "server": "https://kubernetes.default.svc"},
+				{"values.lol1": "lol", "values.lol2": "{{values.lol1}}{{values.lol1}}", "values.lol3": "{{values.lol2}}{{values.lol2}}{{values.lol2}}", "values.foo": "bar", "values.bar": "{{ metadata.annotations.foo.argoproj.io }}", "values.no-op": "{{ this-does-not-exist }}", "values.bat": "{{ metadata.labels.environment }}", "values.aaa": "https://kubernetes.default.svc", "nameNormalized": "in-cluster", "name": "in-cluster", "server": "https://kubernetes.default.svc", "project": "default"},
 				{
 					"values.lol1": "lol", "values.lol2": "{{values.lol1}}{{values.lol1}}", "values.lol3": "{{values.lol2}}{{values.lol2}}{{values.lol2}}", "values.foo": "bar", "values.bar": "production", "values.no-op": "{{ this-does-not-exist }}", "values.bat": "production", "values.aaa": "https://production-01.example.com", "name": "production_01/west", "nameNormalized": "production-01-west", "server": "https://production-01.example.com", "metadata.labels.environment": "production", "metadata.labels.org": "bar",
-					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production",
+					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production", "project": "prod-project",
 				},
 
 				{
 					"values.lol1": "lol", "values.lol2": "{{values.lol1}}{{values.lol1}}", "values.lol3": "{{values.lol2}}{{values.lol2}}{{values.lol2}}", "values.foo": "bar", "values.bar": "staging", "values.no-op": "{{ this-does-not-exist }}", "values.bat": "staging", "values.aaa": "https://staging-01.example.com", "name": "staging-01", "nameNormalized": "staging-01", "server": "https://staging-01.example.com", "metadata.labels.environment": "staging", "metadata.labels.org": "foo",
-					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging",
+					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging", "project": "default",
 				},
 			},
 			clientError:   false,
@@ -131,12 +132,12 @@ func TestGenerateParams(t *testing.T) {
 			expected: []map[string]interface{}{
 				{
 					"name": "production_01/west", "nameNormalized": "production-01-west", "server": "https://production-01.example.com", "metadata.labels.environment": "production", "metadata.labels.org": "bar",
-					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production",
+					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production", "project": "prod-project",
 				},
 
 				{
 					"name": "staging-01", "nameNormalized": "staging-01", "server": "https://staging-01.example.com", "metadata.labels.environment": "staging", "metadata.labels.org": "foo",
-					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging",
+					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging", "project": "default",
 				},
 			},
 			clientError:   false,
@@ -155,7 +156,7 @@ func TestGenerateParams(t *testing.T) {
 			expected: []map[string]interface{}{
 				{
 					"values.foo": "bar", "name": "production_01/west", "nameNormalized": "production-01-west", "server": "https://production-01.example.com", "metadata.labels.environment": "production", "metadata.labels.org": "bar",
-					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production",
+					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production", "project": "prod-project",
 				},
 			},
 			clientError:   false,
@@ -181,11 +182,11 @@ func TestGenerateParams(t *testing.T) {
 			expected: []map[string]interface{}{
 				{
 					"values.foo": "bar", "name": "staging-01", "nameNormalized": "staging-01", "server": "https://staging-01.example.com", "metadata.labels.environment": "staging", "metadata.labels.org": "foo",
-					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging",
+					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging", "project": "default",
 				},
 				{
 					"values.foo": "bar", "name": "production_01/west", "nameNormalized": "production-01-west", "server": "https://production-01.example.com", "metadata.labels.environment": "production", "metadata.labels.org": "bar",
-					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production",
+					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production", "project": "prod-project",
 				},
 			},
 			clientError:   false,
@@ -214,7 +215,7 @@ func TestGenerateParams(t *testing.T) {
 			expected: []map[string]interface{}{
 				{
 					"values.name": "baz", "name": "staging-01", "nameNormalized": "staging-01", "server": "https://staging-01.example.com", "metadata.labels.environment": "staging", "metadata.labels.org": "foo",
-					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging",
+					"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging", "project": "default",
 				},
 			},
 			clientError:   false,
@@ -244,15 +245,15 @@ func TestGenerateParams(t *testing.T) {
 			expected: []map[string]interface{}{
 				{
 					"clusters": []map[string]interface{}{
-						{"values.lol1": "lol", "values.lol2": "{{values.lol1}}{{values.lol1}}", "values.lol3": "{{values.lol2}}{{values.lol2}}{{values.lol2}}", "values.foo": "bar", "values.bar": "{{ metadata.annotations.foo.argoproj.io }}", "values.no-op": "{{ this-does-not-exist }}", "values.bat": "{{ metadata.labels.environment }}", "values.aaa": "https://kubernetes.default.svc", "nameNormalized": "in-cluster", "name": "in-cluster", "server": "https://kubernetes.default.svc"},
+						{"values.lol1": "lol", "values.lol2": "{{values.lol1}}{{values.lol1}}", "values.lol3": "{{values.lol2}}{{values.lol2}}{{values.lol2}}", "values.foo": "bar", "values.bar": "{{ metadata.annotations.foo.argoproj.io }}", "values.no-op": "{{ this-does-not-exist }}", "values.bat": "{{ metadata.labels.environment }}", "values.aaa": "https://kubernetes.default.svc", "nameNormalized": "in-cluster", "name": "in-cluster", "server": "https://kubernetes.default.svc", "project": "default"},
 						{
 							"values.lol1": "lol", "values.lol2": "{{values.lol1}}{{values.lol1}}", "values.lol3": "{{values.lol2}}{{values.lol2}}{{values.lol2}}", "values.foo": "bar", "values.bar": "production", "values.no-op": "{{ this-does-not-exist }}", "values.bat": "production", "values.aaa": "https://production-01.example.com", "name": "production_01/west", "nameNormalized": "production-01-west", "server": "https://production-01.example.com", "metadata.labels.environment": "production", "metadata.labels.org": "bar",
-							"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production",
+							"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production", "project": "prod-project",
 						},
 
 						{
 							"values.lol1": "lol", "values.lol2": "{{values.lol1}}{{values.lol1}}", "values.lol3": "{{values.lol2}}{{values.lol2}}{{values.lol2}}", "values.foo": "bar", "values.bar": "staging", "values.no-op": "{{ this-does-not-exist }}", "values.bat": "staging", "values.aaa": "https://staging-01.example.com", "name": "staging-01", "nameNormalized": "staging-01", "server": "https://staging-01.example.com", "metadata.labels.environment": "staging", "metadata.labels.org": "foo",
-							"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging",
+							"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging", "project": "default",
 						},
 					},
 				},
@@ -284,11 +285,11 @@ func TestGenerateParams(t *testing.T) {
 					"clusters": []map[string]interface{}{
 						{
 							"values.foo": "bar", "name": "production_01/west", "nameNormalized": "production-01-west", "server": "https://production-01.example.com", "metadata.labels.environment": "production", "metadata.labels.org": "bar",
-							"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production",
+							"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "production", "project": "prod-project",
 						},
 						{
 							"values.foo": "bar", "name": "staging-01", "nameNormalized": "staging-01", "server": "https://staging-01.example.com", "metadata.labels.environment": "staging", "metadata.labels.org": "foo",
-							"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging",
+							"metadata.labels.argocd.argoproj.io/secret-type": "cluster", "metadata.annotations.foo.argoproj.io": "staging", "project": "default",
 						},
 					},
 				},
diff --git a/docs/operator-manual/applicationset/Generators-Cluster.md b/docs/operator-manual/applicationset/Generators-Cluster.md
index 5532b87d6ad3e8..3a9722d93ef5f3 100644
--- a/docs/operator-manual/applicationset/Generators-Cluster.md
+++ b/docs/operator-manual/applicationset/Generators-Cluster.md
@@ -9,6 +9,7 @@ It automatically provides the following parameter values to the Application temp
 - `name`
 - `nameNormalized` *('name' but normalized to contain only lowercase alphanumeric characters, '-' or '.')*
 - `server`
+- `project` *(the Secret's 'project' field, if present; otherwise, it defaults to 'default')*
 - `metadata.labels.<key>` *(for each label in the Secret)*
 - `metadata.annotations.<key>` *(for each annotation in the Secret)*