# CfnUser

Creates a new IAM user for your AWS account .

For information about quotas for the number of IAM users you can create, see [IAM and AWS STS quotas](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_iam-quotas.html) in the *IAM User Guide* .

Extends: Construct › CfnElement › CfnRefElement › CfnResource › CfnUser
Implements: IInspectable, ITaggable, IEnvironmentAware, IUserRef, IConstruct, IDependable

- CloudFormation: [`AWS::IAM::User`](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-resource-iam-user.html)
- Source: Generated code
- Type last changed: v2.252.0 · 30 Apr 2026

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_iam as iam } from 'aws-cdk-lib';

declare const policyDocument: any;
const cfnUser = new iam.CfnUser(this, 'MyCfnUser', /* all optional props */ {
  groups: ['groups'],
  loginProfile: {
    password: 'password',

    // the properties below are optional
    passwordResetRequired: false,
  },
  managedPolicyArns: ['managedPolicyArns'],
  path: 'path',
  permissionsBoundary: 'permissionsBoundary',
  policies: [{
    policyDocument: policyDocument,
    policyName: 'policyName',
  }],
  tags: [{
    key: 'key',
    value: 'value',
  }],
  userName: 'userName',
});
```

## Initializer

```ts
new CfnUser(scope: Construct, id: string, props?: CfnUserProps)
```

## Construct Props

- `groups`: string | [IGroupRef](/cdk/api/v2/docs/aws-cdk-lib.interfaces.aws_iam.IGroupRef.html)[] — A list of group names to which you want to add the user.

- `loginProfile`: [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | [CfnUser.LoginProfileProperty](/cdk/api/v2/docs/aws-cdk-lib.aws_iam.CfnUser.LoginProfileProperty.html) — Creates a password for the specified IAM user.

  A password allows an IAM user to access AWS services through the AWS Management Console .

  You can use the AWS CLI , the AWS API, or the *Users* page in the IAM console to create a password for any IAM user. Use [ChangePassword](https://docs.aws.amazon.com/IAM/latest/APIReference/API_ChangePassword.html) to update your own existing password in the *My Security Credentials* page in the AWS Management Console .

  For more information about managing passwords, see [Managing passwords](https://docs.aws.amazon.com/IAM/latest/UserGuide/Using_ManagingLogins.html) in the *IAM User Guide* .

- `managedPolicyArns`: string | [IManagedPolicyRef](/cdk/api/v2/docs/aws-cdk-lib.interfaces.aws_iam.IManagedPolicyRef.html)[] — A list of Amazon Resource Names (ARNs) of the IAM managed policies that you want to attach to the user.

  For more information about ARNs, see [Amazon Resource Names (ARNs) and AWS Service Namespaces](https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html) in the *AWS General Reference* .

- `path`: string — The path for the user name.

  For more information about paths, see [IAM identifiers](https://docs.aws.amazon.com/IAM/latest/UserGuide/Using_Identifiers.html) in the *IAM User Guide* .

  This parameter is optional. If it is not included, it defaults to a slash (/).

  This parameter allows (through its [regex pattern](https://docs.aws.amazon.com/http://wikipedia.org/wiki/regex) ) a string of characters consisting of either a forward slash (/) by itself or a string that must begin and end with forward slashes. In addition, it can contain any ASCII character from the ! ( `\u0021` ) through the DEL character ( `\u007F` ), including most punctuation characters, digits, and upper and lowercased letters.

- `permissionsBoundary`: string | [IManagedPolicyRef](/cdk/api/v2/docs/aws-cdk-lib.interfaces.aws_iam.IManagedPolicyRef.html) — The ARN of the managed policy that is used to set the permissions boundary for the user.

  A permissions boundary policy defines the maximum permissions that identity-based policies can grant to an entity, but does not grant permissions. Permissions boundaries do not define the maximum permissions that a resource-based policy can grant to an entity. To learn more, see [Permissions boundaries for IAM entities](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_boundaries.html) in the *IAM User Guide* .

  For more information about policy types, see [Policy types](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#access_policy-types) in the *IAM User Guide* .

- `policies`: [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | [CfnUser.PolicyProperty](/cdk/api/v2/docs/aws-cdk-lib.aws_iam.CfnUser.PolicyProperty.html)[] — Adds or updates an inline policy document that is embedded in the specified IAM user.

  To view AWS::IAM::User snippets, see [Declaring an IAM User Resource](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/quickref-iam.html#scenario-iam-user) .

  > The name of each policy for a role, user, or group must be unique. If you don't choose unique names, updates to the IAM identity will fail.

  For information about limits on the number of inline policies that you can embed in a user, see [Limitations on IAM Entities](https://docs.aws.amazon.com/IAM/latest/UserGuide/LimitationsOnEntities.html) in the *IAM User Guide* .

- `tags`: [CfnTag](/cdk/api/v2/docs/aws-cdk-lib.CfnTag.html)[] — A list of tags that you want to attach to the new user.

  Each tag consists of a key name and an associated value. For more information about tagging, see [Tagging IAM resources](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_tags.html) in the *IAM User Guide* .

  > If any one of the tags is invalid or if you exceed the allowed maximum number of tags, then the entire request fails and the resource is not created.

- `userName`: string — The name of the user to create. Do not include the path in this value.

  This parameter allows (per its [regex pattern](https://docs.aws.amazon.com/http://wikipedia.org/wiki/regex) ) a string of characters consisting of upper and lowercase alphanumeric characters with no spaces. You can also include any of the following characters: _+=,.@-. The user name must be unique within the account. User names are not distinguished by case. For example, you cannot create users named both "John" and "john".

  If you don't specify a name, CloudFormation generates a unique physical ID and uses that ID for the user name.

  If you specify a name, you must specify the `CAPABILITY_NAMED_IAM` value to acknowledge your template's capabilities. For more information, see [Acknowledging IAM Resources in CloudFormation Templates](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html#using-iam-capabilities) .

  > Naming an IAM resource can cause an unrecoverable error if you reuse the same template in multiple Regions. To prevent this, we recommend using `Fn::Join` and `AWS::Region` to create a Region-specific name, as in the following example: `{"Fn::Join": ["", [{"Ref": "AWS::Region"}, {"Ref": "MyResourceName"}]]}` .

## Properties

- `attrArn`: string — Returns the Amazon Resource Name (ARN) for the specified `AWS::IAM::User` resource.

  For example: `arn:aws:iam::123456789012:user/mystack-myuser-1CCXAFG2H2U4D` .

- `CFN_RESOURCE_TYPE_NAME`: string (static) — The CloudFormation resource type name for this resource class.

- `cfnOptions`: [ICfnResourceOptions](/cdk/api/v2/docs/aws-cdk-lib.ICfnResourceOptions.html) — Options for this resource, such as condition, update policy etc.

- `cfnResourceType`: string — AWS resource type.

- `creationStack`: string[]

- `env`: [ResourceEnvironment](/cdk/api/v2/docs/aws-cdk-lib.interfaces.ResourceEnvironment.html)

- `groups`: string[] — A list of group names to which you want to add the user.

- `logicalId`: string — The logical ID for this CloudFormation stack element.

  The logical ID of the element
  is calculated from the path of the resource node in the construct tree.

  To override this value, use `overrideLogicalId(newLogicalId)`.

- `loginProfile`: [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | [CfnUser.LoginProfileProperty](/cdk/api/v2/docs/aws-cdk-lib.aws_iam.CfnUser.LoginProfileProperty.html) — Creates a password for the specified IAM user.

- `managedPolicyArns`: string[] — A list of Amazon Resource Names (ARNs) of the IAM managed policies that you want to attach to the user.

- `node`: [Node](/cdk/api/v2/docs/constructs.Node.html) — The tree node.

- `path`: string — The path for the user name.

- `permissionsBoundary`: string — The ARN of the managed policy that is used to set the permissions boundary for the user.

- `policies`: [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | [CfnUser.PolicyProperty](/cdk/api/v2/docs/aws-cdk-lib.aws_iam.CfnUser.PolicyProperty.html)[] — Adds or updates an inline policy document that is embedded in the specified IAM user.

- `ref`: string — Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.

  If, by any chance, the intrinsic reference of a resource is not a string, you could
  coerce it to an IResolvable through `Lazy.any({ produce: resource.ref })`.

- `stack`: [Stack](/cdk/api/v2/docs/aws-cdk-lib.Stack.html) — The stack in which this element is defined.

  CfnElements must be defined within a stack scope (directly or indirectly).

- `tags`: [TagManager](/cdk/api/v2/docs/aws-cdk-lib.TagManager.html) — Tag Manager which manages the tags for this resource.

- `tagsRaw`: [CfnTag](/cdk/api/v2/docs/aws-cdk-lib.CfnTag.html)[] — A list of tags that you want to attach to the new user.

- `userName`: string — The name of the user to create.

  Do not include the path in this value.

- `userRef`: [UserReference](/cdk/api/v2/docs/aws-cdk-lib.interfaces.aws_iam.UserReference.html) — A reference to a User resource.

## Methods

- `addDeletionOverride(path: string): void` — Syntactic sugar for `addOverride(path, undefined)`.

  **Parameters**

  - `path` — The path of the value to delete.

- `addDependency(target: CfnResource): void` — Use `addResourceDependency` instead.

  This method has been renamed to `addResourceDependency` to more clearly
  set it apart from `construct.node.addDependency`. See the documentation
  of that function for more details.

- `addDependsOn(target: CfnResource): void` — Use `addResourceDependency` instead.

  This can be used for resources across stacks (or nested stack) boundaries
  and the dependency will automatically be transferred to the relevant scope.

  This method has been renamed to `addResourceDependency`, which makes it
  more clear that this method operates at a different level from the
  construct-level `construct.node.addDependency()` mechanism.

- `addMetadata(key: string, value: any): void` — Add a value to the CloudFormation Resource Metadata.

- `addOverride(path: string, value: any): void` — Adds an override to the synthesized CloudFormation resource.

  To add a
  property override, either use `addPropertyOverride` or prefix `path` with
  "Properties." (i.e. `Properties.TopicName`).

  If the override is nested, separate each nested level using a dot (.) in the path parameter.
  If there is an array as part of the nesting, specify the index in the path.

  To include a literal `.` in the property name, prefix with a `\`. In most
  programming languages you will need to write this as `"\\."` because the
  `\` itself will need to be escaped.

  For example,
  ```typescript
  cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
  cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');
  ```
  would add the overrides
  ```json
  "Properties": {
    "GlobalSecondaryIndexes": [
      {
        "Projection": {
          "NonKeyAttributes": [ "myattribute" ]
          ...
        }
        ...
      },
      {
        "ProjectionType": "INCLUDE"
        ...
      },
    ]
    ...
  }
  ```

  The `value` argument to `addOverride` will not be processed or translated
  in any way. Pass raw JSON values in here with the correct capitalization
  for CloudFormation. If you pass CDK classes or structs, they will be
  rendered with lowercased key names, and CloudFormation will reject the
  template.

  **Parameters**

  - `path` — - The path of the property, you can use dot notation to override values in complex types.
  - `value` — - The value.

- `addPropertyDeletionOverride(propertyPath: string): void` — Adds an override that deletes the value of a property from the resource definition.

  **Parameters**

  - `propertyPath` — The path to the property.

- `addPropertyOverride(propertyPath: string, value: any): void` — Adds an override to a resource property.

  Syntactic sugar for `addOverride("Properties.<...>", value)`.

  **Parameters**

  - `propertyPath` — The path of the property.
  - `value` — The value.

- `addResourceDependency(target: CfnResource, reason?: string): void` — Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.

  This can be used for resources across stacks (or nested stack) boundaries
  and the dependency will automatically be transferred to the relevant scope.

  This method only adds dependencies between L1 resources. If you are
  looking for a generic construct-to-construct dependency mechanism that works
  for all constructs including L2s, use `construct.node.addDependency` instead.

- `applyCrossStackReferenceStrength(strength: ReferenceStrength): void` — Sets the cross-stack reference strength for this resource.

  When set, any cross-stack reference to this resource will use the specified
  strength instead of the global default from the consuming stack's context.

  **Parameters**

  - `strength` — - The reference strength to use for this resource.

- `applyRemovalPolicy(policy?: RemovalPolicy, options?: RemovalPolicyOptions): void` — Sets the deletion policy of the resource based on the removal policy specified.

  The Removal Policy controls what happens to this resource when it stops
  being managed by CloudFormation, either because you've removed it from the
  CDK application or because you've made a change that requires the resource
  to be replaced.

  The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
  account for data recovery and cleanup later (`RemovalPolicy.RETAIN`). In some
  cases, a snapshot can be taken of the resource prior to deletion
  (`RemovalPolicy.SNAPSHOT`). A list of resources that support this policy
  can be found in the following link:

- `arnForUser(resource: IUserRef): string` (static)

- `cfnPropertyName(cdkPropertyName: string): string`

- `getAtt(attributeName: string, typeHint?: ResolutionTypeHint): Reference` — Returns a token for an runtime attribute of this resource.

  Ideally, use generated attribute accessors (e.g. `resource.arn`), but this can be used for future compatibility
  in case there is no generated attribute.

  **Parameters**

  - `attributeName` — The name of the attribute.

- `getMetadata(key: string): any` — Retrieve a value value from the CloudFormation Resource Metadata.

- `inspect(inspector: TreeInspector): void` — Examines the CloudFormation resource and discloses attributes.

  **Parameters**

  - `inspector` — tree inspector to collect and process attributes.

- `isCfnElement(x: any): boolean` (static) — Returns `true` if a construct is a stack element (i.e. part of the synthesized cloudformation template).

  Uses duck-typing instead of `instanceof` to allow stack elements from different
  versions of this library to be included in the same stack.

  **Returns:** The construct as a stack element or undefined if it is not a stack element.

- `isCfnResource(x: any): boolean` (static) — Check whether the given object is a CfnResource.

- `isCfnUser(x: any): boolean` (static) — Checks whether the given object is a CfnUser.

- `isConstruct(x: any): boolean` (static) — Checks if `x` is a construct.

  Use this method instead of `instanceof` to properly detect `Construct`
  instances, even when the construct library is symlinked.

  Explanation: in JavaScript, multiple copies of the `constructs` library on
  disk are seen as independent, completely different libraries. As a
  consequence, the class `Construct` in each copy of the `constructs` library
  is seen as a different class, and an instance of one class will not test as
  `instanceof` the other class. `npm install` will not create installations
  like this, but users may manually symlink construct libraries together or
  use a monorepo tool: in those cases, multiple copies of the `constructs`
  library can be accidentally installed, and `instanceof` will behave
  unpredictably. It is safest to avoid using `instanceof`, and using
  this type-testing method instead.

  **Parameters**

  - `x` — Any object.

  **Returns:** true if `x` is an object created from a class which extends `Construct`.

- `obtainDependencies(): Stack | CfnResource[]` — Retrieves an array of resources and stacks this resource depends on.

  For resources depended on directly, returns the `CfnResource` object. For
  dependencies on other stacks, returns the `Stack` object. The order of the
  array is not guaranteed.

- `overrideLogicalId(newLogicalId: string): void` — Overrides the auto-generated logical ID with a specific ID.

  **Parameters**

  - `newLogicalId` — The new logical ID to use for this stack element.

- `removeDependency(target: CfnResource): void` — Use `removeResourceDependency` instead

  This can be used for resources across stacks (including nested stacks)
  and the dependency will automatically be removed from the relevant scope.

- `removeResourceDependency(target: CfnResource): void` — Indicates that this resource no longer depends on another resource.

  This can be used for resources across stacks (including nested stacks)
  and the dependency will automatically be removed from the relevant scope.

- `replaceDependency(target: CfnResource, newTarget: CfnResource): void` — Replaces one dependency with another.

  **Parameters**

  - `target` — The dependency to replace.
  - `newTarget` — The new dependency to add.

- `toString(): string` — Returns a string representation of this construct.

  **Returns:** a string representation of this resource

- `with(...mixins: IMixin[]): IConstruct` — Applies one or more mixins to this construct.

  Mixins are applied in order. The list of constructs is captured at the
  start of the call, so constructs added by a mixin will not be visited.
  Use multiple `with()` calls if subsequent mixins should apply to added
  constructs.