Use DeleteRole with an Amazon SDK or command line tool

    /// <summary>
    /// Delete an IAM role.
    /// </summary>
    /// <param name="roleName">The name of the IAM role to delete.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> DeleteRoleAsync(string roleName)
    {
        var response = await _IAMService.DeleteRoleAsync(new DeleteRoleRequest { RoleName = roleName });
        return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
    }

###############################################################################
# function iecho
#
# This function enables the script to display the specified text only if
# the global variable $VERBOSE is set to true.
###############################################################################
function iecho() {
  if [[ $VERBOSE == true ]]; then
    echo "$@"
  fi
}

###############################################################################
# function errecho
#
# This function outputs everything sent to it to STDERR (standard error output).
###############################################################################
function errecho() {
  printf "%s\n" "$*" 1>&2
}

###############################################################################
# function iam_delete_role
#
# This function deletes an IAM role.
#
# Parameters:
#       -n role_name -- The name of the IAM role.
#
# Returns:
#       0 - If successful.
#       1 - If it fails.
###############################################################################
function iam_delete_role() {
  local role_name response
  local option OPTARG # Required to use getopts command in a function.

  # bashsupport disable=BP5008
  function usage() {
    echo "function iam_delete_role"
    echo "Deletes an WS Identity and Access Management (IAM) role"
    echo "  -n role_name -- The name of the IAM role."
    echo ""
  }

  # Retrieve the calling parameters.
  while getopts "n:h" option; do
    case "${option}" in
      n) role_name="${OPTARG}" ;;
      h)
        usage
        return 0
        ;;
      \?)
        echo "Invalid parameter"
        usage
        return 1
        ;;
    esac
  done
  export OPTIND=1

  echo "role_name:$role_name"
  if [[ -z "$role_name" ]]; then
    errecho "ERROR: You must provide a role name with the -n parameter."
    usage
    return 1
  fi

  iecho "Parameters:\n"
  iecho "    Role name:  $role_name"
  iecho ""

  response=$(aws iam delete-role \
    --role-name "$role_name")

  local error_code=${?}

  if [[ $error_code -ne 0 ]]; then
    aws_cli_error_log $error_code
    errecho "ERROR: AWS reports delete-role operation failed.\n$response"
    return 1
  fi

  iecho "delete-role response:$response"
  iecho

  return 0
}

To delete an IAM role

The following delete-role command removes the role named Test-Role.

aws iam delete-role \
    --role-name Test-Role

This command produces no output.

Before you can delete a role, you must remove the role from any instance profile (remove-role-from-instance-profile), detach any managed policies (detach-role-policy) and delete any inline policies that are attached to the role (delete-role-policy).

For more information, see Creating IAM roles and Using instance profiles in the Amazon IAM User Guide.

// RoleWrapper encapsulates AWS Identity and Access Management (IAM) role actions
// used in the examples.
// It contains an IAM service client that is used to perform role actions.
type RoleWrapper struct {
	IamClient *iam.Client
}



// DeleteRole deletes a role. All attached policies must be detached before a
// role can be deleted.
func (wrapper RoleWrapper) DeleteRole(roleName string) error {
	_, err := wrapper.IamClient.DeleteRole(context.TODO(), &iam.DeleteRoleInput{
		RoleName: aws.String(roleName),
	})
	if err != nil {
		log.Printf("Couldn't delete role %v. Here's why: %v\n", roleName, err)
	}
	return err
}

Delete the role.

import { DeleteRoleCommand, IAMClient } from "@aws-sdk/client-iam";

const client = new IAMClient({});

/**
 *
 * @param {string} roleName
 */
export const deleteRole = (roleName) => {
  const command = new DeleteRoleCommand({ RoleName: roleName });
  return client.send(command);
};

Example 1: This example deletes the role named MyNewRole from the current IAM account. Before you can delete the role you must first use the Unregister-IAMRolePolicy command to detach any managed policies. Inline policies are deleted with the role.

Remove-IAMRole -RoleName MyNewRole

Example 2: This example detaches any managed policies from the role named MyNewRole and then deletes the role. The first line retrieves any managed policies attached to the role as a collection and then detaches each policy in the collection from the role. The second line deletes the role itself. Inline policies are deleted along with the role.

Get-IAMAttachedRolePolicyList -RoleName MyNewRole | Unregister-IAMRolePolicy -RoleName MyNewRole
Remove-IAMRole -RoleName MyNewRole

def delete_role(role_name):
    """
    Deletes a role.

    :param role_name: The name of the role to delete.
    """
    try:
        iam.Role(role_name).delete()
        logger.info("Deleted role %s.", role_name)
    except ClientError:
        logger.exception("Couldn't delete role %s.", role_name)
        raise

  # Deletes a role and its attached policies.
  #
  # @param role_name [String] The name of the role to delete.
  def delete_role(role_name)
    begin
      # Detach and delete attached policies
      @iam_client.list_attached_role_policies(role_name: role_name).each do |response|
        response.attached_policies.each do |policy|
          @iam_client.detach_role_policy({
                                    role_name: role_name,
                                    policy_arn: policy.policy_arn
                                  })
          # Check if the policy is a customer managed policy (not AWS managed)
          unless policy.policy_arn.include?("aws:policy/")
            @iam_client.delete_policy({ policy_arn: policy.policy_arn })
            @logger.info("Deleted customer managed policy #{policy.policy_name}.")
          end
        end
      end

      # Delete the role
      @iam_client.delete_role({ role_name: role_name })
      @logger.info("Deleted role #{role_name}.")
    rescue Aws::IAM::Errors::ServiceError => e
      @logger.error("Couldn't detach policies and delete role #{role_name}. Here's why:")
      @logger.error("\t#{e.code}: #{e.message}")
      raise
    end
  end

pub async fn delete_role(client: &iamClient, role: &Role) -> Result<(), iamError> {
    let role = role.clone();
    while client
        .delete_role()
        .role_name(role.role_name())
        .send()
        .await
        .is_err()
    {
        sleep(Duration::from_secs(2)).await;
    }
    Ok(())
}

    public func deleteRole(role: IAMClientTypes.Role) async throws {
        let input = DeleteRoleInput(
            roleName: role.roleName
        )
        do {
            _ = try await iamClient.deleteRole(input: input)
        } catch {
            throw error
        }
    }