Abstract: A hub cap lock device adapted to be installed upon the air valve of a vehicle wheel tire or upon a threaded stud projecting from the wheel includes a housing with an internal cavity; means are provided at one end of the housing for securing the housing to the wheel part and a cap member is mounted at the opposite end of the housing for engagement with the hub cap; the cap has a flange portion with a dimension slightly greater than a hole in the hub cap; and a lock engagedly received in the housing secures the cap member to the housing thereby preventing unauthorized removal of the hub cap.