The General Motors K platform (commonly called the K-body) was an automobile platform designation used for front wheel drive Cadillac models beginning in 1980.

It replaced the rear wheel drive K platform.

The K-body designation was used for sedans; similar coupé models used the nearly identical GM E platform.

Unlike the E-body, the K designation has been exclusive to Cadillac.

In 1986, the Seville was replaced with an even smaller front wheel drive model, also given the K designation.