diff --git a/examples/rbac_with_domains_policy2.csv b/examples/rbac_with_domains_policy2.csv
new file mode 100644
index 00000000..baa06f06
--- /dev/null
+++ b/examples/rbac_with_domains_policy2.csv
@@ -0,0 +1,9 @@
+p, admin, domain1, data1, read
+p, admin, domain1, data1, write
+p, admin, domain2, data2, read
+p, admin, domain2, data2, write
+p, user, domain3, data2, read
+g, alice, admin, domain1
+g, alice, admin, domain2
+g, bob, admin, domain2
+g, bob, user, domain3
diff --git a/src/enforcer.ts b/src/enforcer.ts
index 9ca947ce..f784c138 100644
--- a/src/enforcer.ts
+++ b/src/enforcer.ts
@@ -464,6 +464,30 @@ export class Enforcer extends ManagementEnforcer {
 
     return res.filter((n) => !inherits.some((m) => n === m));
   }
+
+  /**
+   * getDomainsForUser gets all domains that a user has.
+   */
+  public async getDomainsForUser(user: string): Promise<string[]> {
+    const domains: string[] = [];
+    for (const rm of this.rmMap.values()) {
+      const domain = await rm.getDomains(user);
+      domains.push(...domain);
+    }
+    return domains;
+  }
+
+  /**
+   * getAllDomains gets all domains.
+   */
+  public async getAllDomains(): Promise<string[]> {
+    const domains: string[] = [];
+    for (const rm of this.rmMap.values()) {
+      const domain = await rm.getAllDomains();
+      domains.push(...domain);
+    }
+    return arrayRemoveDuplicates(domains);
+  }
 }
 
 export async function newEnforcerWithClass<T extends Enforcer>(enforcer: new () => T, ...params: any[]): Promise<T> {
diff --git a/src/rbac/defaultRoleManager.ts b/src/rbac/defaultRoleManager.ts
index 9d8f39b6..5271f83a 100644
--- a/src/rbac/defaultRoleManager.ts
+++ b/src/rbac/defaultRoleManager.ts
@@ -352,4 +352,48 @@ export class DefaultRoleManager implements RoleManager {
       });
     }
   }
+
+  /**
+   * getDomains gets domains that a user has.
+   */
+  public async getDomains(name: string): Promise<string[]> {
+    const domains: string[] = [];
+    this.allDomains.forEach((roles, domain) => {
+      // Skip the default domain if there are other domains
+      if (domain === DEFAULT_DOMAIN && this.allDomains.size > 1) {
+        return;
+      }
+      const role = roles.get(name);
+      if (role) {
+        // Check if role has any roles it inherits OR if any other role inherits from it
+        const hasRoles = role.getRoles().length > 0;
+        const hasUsers = this.hasUserForRole(roles, name);
+        if (hasRoles || hasUsers) {
+          domains.push(domain);
+        }
+      }
+    });
+    return domains;
+  }
+
+  /**
+   * getAllDomains gets all domains.
+   */
+  public async getAllDomains(): Promise<string[]> {
+    const domains = Array.from(this.allDomains.keys());
+    // Filter out the default domain if there are other domains
+    if (domains.length > 1) {
+      return domains.filter((d) => d !== DEFAULT_DOMAIN);
+    }
+    return domains;
+  }
+
+  private hasUserForRole(roles: Roles, name: string): boolean {
+    for (const role of roles.values()) {
+      if (role.hasDirectRole(name)) {
+        return true;
+      }
+    }
+    return false;
+  }
 }
diff --git a/src/rbac/roleManager.ts b/src/rbac/roleManager.ts
index 54d99c38..4c3afb7e 100644
--- a/src/rbac/roleManager.ts
+++ b/src/rbac/roleManager.ts
@@ -36,4 +36,8 @@ export interface RoleManager {
   getUsers(name: string, ...domain: string[]): Promise<string[]>;
   // PrintRoles prints all the roles to log.
   printRoles(): Promise<void>;
+  // GetDomains gets domains that a user has
+  getDomains(name: string): Promise<string[]>;
+  // GetAllDomains gets all domains
+  getAllDomains(): Promise<string[]>;
 }
diff --git a/test/rbacwDomainAPI.test.ts b/test/rbacwDomainAPI.test.ts
index c8b8855e..ea29bd81 100644
--- a/test/rbacwDomainAPI.test.ts
+++ b/test/rbacwDomainAPI.test.ts
@@ -29,3 +29,26 @@ test('test getUsersForRoleInDomain', async () => {
   expect(await e.getUsersForRoleInDomain('superadmin', 'domain1')).toEqual([]);
   expect(await e.getUsersForRoleInDomain('superadmin', 'domain2')).toEqual([]);
 });
+
+test('test getDomainsForUser', async () => {
+  const e = await newEnforcer('examples/rbac_with_domains_model.conf', 'examples/rbac_with_domains_policy2.csv');
+
+  let myRes = await e.getDomainsForUser('alice');
+  myRes.sort();
+  expect(myRes).toEqual(['domain1', 'domain2']);
+
+  myRes = await e.getDomainsForUser('bob');
+  myRes.sort();
+  expect(myRes).toEqual(['domain2', 'domain3']);
+
+  myRes = await e.getDomainsForUser('user');
+  expect(myRes).toEqual(['domain3']);
+});
+
+test('test getAllDomains', async () => {
+  const e = await newEnforcer('examples/rbac_with_domains_model.conf', 'examples/rbac_with_domains_policy.csv');
+
+  const myRes = await e.getAllDomains();
+  myRes.sort();
+  expect(myRes).toEqual(['domain1', 'domain2']);
+});