diff --git a/CHANGELOG.md b/CHANGELOG.md
index 59d19ef4..095a9bc0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,9 @@
 ## 1.7.0 (Unreleased)
+
+FEATURES:
+
+* `postgresql_grant`: Implement grant on functions
+
 ## 1.6.0 (May 22, 2020)
 
 FEATURES:
diff --git a/postgresql/helpers.go b/postgresql/helpers.go
index c9af129b..e9a2084d 100644
--- a/postgresql/helpers.go
+++ b/postgresql/helpers.go
@@ -102,6 +102,7 @@ var allowedPrivileges = map[string][]string{
 	"database": []string{"ALL", "CREATE", "CONNECT", "TEMPORARY", "TEMP"},
 	"table":    []string{"ALL", "SELECT", "INSERT", "UPDATE", "DELETE", "TRUNCATE", "REFERENCES", "TRIGGER"},
 	"sequence": []string{"ALL", "USAGE", "SELECT", "UPDATE"},
+	"function": []string{"ALL", "EXECUTE"},
 }
 
 // validatePrivileges checks that privileges to apply are allowed for this object type.
diff --git a/postgresql/resource_postgresql_default_privileges.go b/postgresql/resource_postgresql_default_privileges.go
index 1046b392..0718289d 100644
--- a/postgresql/resource_postgresql_default_privileges.go
+++ b/postgresql/resource_postgresql_default_privileges.go
@@ -52,8 +52,9 @@ func resourcePostgreSQLDefaultPrivileges() *schema.Resource {
 				ValidateFunc: validation.StringInSlice([]string{
 					"table",
 					"sequence",
+					"function",
 				}, false),
-				Description: "The PostgreSQL object type to set the default privileges on (one of: table, sequence)",
+				Description: "The PostgreSQL object type to set the default privileges on (one of: table, sequence, function)",
 			},
 			"privileges": &schema.Schema{
 				Type:        schema.TypeSet,
diff --git a/postgresql/resource_postgresql_grant.go b/postgresql/resource_postgresql_grant.go
index 6604a81e..b7fc6492 100644
--- a/postgresql/resource_postgresql_grant.go
+++ b/postgresql/resource_postgresql_grant.go
@@ -17,11 +17,13 @@ var allowedObjectTypes = []string{
 	"database",
 	"table",
 	"sequence",
+	"function",
 }
 
 var objectTypes = map[string]string{
 	"table":    "r",
 	"sequence": "S",
+	"function": "f",
 }
 
 func resourcePostgreSQLGrant() *schema.Resource {
@@ -218,16 +220,30 @@ JOIN pg_roles ON grantee = pg_roles.oid WHERE rolname = $2
 }
 
 func readRolePrivileges(txn *sql.Tx, d *schema.ResourceData) error {
-	if d.Get("object_type").(string) == "database" {
+	var query string
+	object_type := strings.ToUpper(d.Get("object_type").(string))
+	switch object_type {
+	case "DATABASE":
 		return readDatabaseRolePriviges(txn, d)
-	}
-
-	// This returns, for the specified role (rolname),
-	// the list of all object of the specified type (relkind) in the specified schema (namespace)
-	// with the list of the currently applied privileges (aggregation of privilege_type)
-	//
-	// Our goal is to check that every object has the same privileges as saved in the state.
-	query := `
+	case "FUNCTION":
+		query = `
+SELECT pg_proc.proname, array_remove(array_agg(privilege_type), NULL)
+FROM pg_proc
+JOIN pg_namespace ON pg_namespace.oid = pg_proc.pronamespace
+LEFT JOIN (
+    select acls.*
+    from (
+             SELECT proname, prokind, pronamespace, (aclexplode(proacl)).* FROM pg_proc
+         ) acls
+    JOIN pg_roles on grantee = pg_roles.oid
+    WHERE rolname = $1
+) privs
+USING (proname, pronamespace, prokind)
+      WHERE nspname = $2 AND prokind = $3
+GROUP BY pg_proc.proname
+`
+	default:
+		query = `
 SELECT pg_class.relname, array_remove(array_agg(privilege_type), NULL)
 FROM pg_class
 JOIN pg_namespace ON pg_namespace.oid = pg_class.relnamespace
@@ -240,8 +256,15 @@ LEFT JOIN (
 ) privs
 USING (relname, relnamespace, relkind)
 WHERE nspname = $2 AND relkind = $3
-GROUP BY pg_class.relname;
+GROUP BY pg_class.relname
 `
+	}
+
+	// This returns, for the specified role (rolname),
+	// the list of all object of the specified type (relkind) in the specified schema (namespace)
+	// with the list of the currently applied privileges (aggregation of privilege_type)
+	//
+	// Our goal is to check that every object has the same privileges as saved in the state.
 
 	objectType := d.Get("object_type").(string)
 	rows, err := txn.Query(
@@ -287,7 +310,7 @@ func createGrantQuery(d *schema.ResourceData, privileges []string) string {
 			pq.QuoteIdentifier(d.Get("database").(string)),
 			pq.QuoteIdentifier(d.Get("role").(string)),
 		)
-	case "TABLE", "SEQUENCE":
+	case "TABLE", "SEQUENCE", "FUNCTION":
 		query = fmt.Sprintf(
 			"GRANT %s ON ALL %sS IN SCHEMA %s TO %s",
 			strings.Join(privileges, ","),
@@ -314,7 +337,7 @@ func createRevokeQuery(d *schema.ResourceData) string {
 			pq.QuoteIdentifier(d.Get("database").(string)),
 			pq.QuoteIdentifier(d.Get("role").(string)),
 		)
-	case "TABLE", "SEQUENCE":
+	case "TABLE", "SEQUENCE", "FUNCTION":
 		query = fmt.Sprintf(
 			"REVOKE ALL PRIVILEGES ON ALL %sS IN SCHEMA %s FROM %s",
 			strings.ToUpper(d.Get("object_type").(string)),
diff --git a/postgresql/resource_postgresql_grant_test.go b/postgresql/resource_postgresql_grant_test.go
index 942fe3a9..3622a33e 100644
--- a/postgresql/resource_postgresql_grant_test.go
+++ b/postgresql/resource_postgresql_grant_test.go
@@ -37,6 +37,15 @@ func TestCreateGrantQuery(t *testing.T) {
 			privileges: []string{"SELECT"},
 			expected:   fmt.Sprintf("GRANT SELECT ON ALL SEQUENCES IN SCHEMA %s TO %s", pq.QuoteIdentifier(databaseName), pq.QuoteIdentifier(roleName)),
 		},
+		{
+			resource: schema.TestResourceDataRaw(t, resourcePostgreSQLGrant().Schema, map[string]interface{}{
+				"object_type": "function",
+				"schema":      databaseName,
+				"role":        roleName,
+			}),
+			privileges: []string{"EXECUTE"},
+			expected:   fmt.Sprintf("GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA %s TO %s", pq.QuoteIdentifier(databaseName), pq.QuoteIdentifier(roleName)),
+		},
 		{
 			resource: schema.TestResourceDataRaw(t, resourcePostgreSQLGrant().Schema, map[string]interface{}{
 				"object_type":       "TABLE",
diff --git a/website/docs/r/postgresql_default_privileges.html.markdown b/website/docs/r/postgresql_default_privileges.html.markdown
index 8534d621..a4e0094a 100644
--- a/website/docs/r/postgresql_default_privileges.html.markdown
+++ b/website/docs/r/postgresql_default_privileges.html.markdown
@@ -32,5 +32,5 @@ resource "postgresql_default_privileges" "read_only_tables" {
 * `database` - (Required) The database to grant default privileges for this role.
 * `owner` - (Required) Role for which apply default privileges (You can change default privileges only for objects that will be created by yourself or by roles that you are a member of).
 * `schema` - (Required) The database schema to set default privileges for this role.
-* `object_type` - (Required) The PostgreSQL object type to set the default privileges on (one of: table, sequence).
+* `object_type` - (Required) The PostgreSQL object type to set the default privileges on (one of: table, sequence,function).
 * `privileges` - (Required) The list of privileges to apply as default privileges.
diff --git a/website/docs/r/postgresql_grant.html.markdown b/website/docs/r/postgresql_grant.html.markdown
index b09562bf..2e2e634b 100644
--- a/website/docs/r/postgresql_grant.html.markdown
+++ b/website/docs/r/postgresql_grant.html.markdown
@@ -29,5 +29,5 @@ resource "postgresql_grant" "readonly_tables" {
 * `role` - (Required) The name of the role to grant privileges on.
 * `database` - (Required) The database to grant privileges on for this role.
 * `schema` - (Required) The database schema to grant privileges on for this role.
-* `object_type` - (Required) The PostgreSQL object type to grant the privileges on (one of: table, sequence).
+* `object_type` - (Required) The PostgreSQL object type to grant the privileges on (one of: table, sequence,function).
 * `privileges` - (Required) The list of privileges to grant.