Use ListAttachedUserPolicies with an AWS SDK or CLI

To list all managed policies that are attached to the specified user

This command returns the names and ARNs of the managed policies for the IAM user named Bob in the AWS account.

aws iam list-attached-user-policies \
    --user-name Bob

Output:

{
    "AttachedPolicies": [
        {
            "PolicyName": "AdministratorAccess",
            "PolicyArn": "arn:aws:iam::aws:policy/AdministratorAccess"
        },
        {
            "PolicyName": "SecurityAudit",
            "PolicyArn": "arn:aws:iam::aws:policy/SecurityAudit"
        }
    ],
    "IsTruncated": false
}

For more information, see Policies and permissions in IAM in the AWS IAM User Guide.

Example 1: This command returns the names and ARNs of the managed policies for the IAM user named Bob in the AWS account. To see the list of inline policies that are embedded in the IAM user, use the Get-IAMUserPolicyList command.

Get-IAMAttachedUserPolicyList -UserName "Bob"

Output:

PolicyArn                                                 PolicyName
---------                                                 ----------
arn:aws:iam::aws:policy/TesterPolicy                      TesterPolicy