**To list the principals associated with a thing** The following ``list-thing-principals`` example lists the principals (X.509 certificates, IAM users, groups, roles, Amazon Cognito identities, or federated identities) associated with the specified thing. :: aws iot list-thing-principals \ --thing-name MyRaspberryPi Output:: { "principals": [ "arn:aws:iot:us-west-2:123456789012:cert/33475ac865079a5ffd5ecd44240640349293facc760642d7d8d5dbb6b4c86893" ] } For more information, see `ListThingPrincipals <https://docs.aws.amazon.com/iot/latest/apireference/API_ListThingPrincipals.html>`__ in the *AWS IoT API Reference*.