What does legal owner mean? Legal owner, legal, owner, registered keeper, keeper The legal owner of a car is the person who purchased it or was given it as a gift. The legal owner of a car and the registered keeper can be different people. Related articles What does registered keeper mean? I have a classic car without an OBD-II socket, can you insure it? What does 'spouse' mean in relation to adding an additional driver? If I’m on a connect policy, how does the app connect to my car? What happens if I change my car?