The Checker Marathon is an automobile produced by the Checker Motors Corporation of Kalamazoo, Michigan, between 1961 and 1982. It was marketed as a passenger car for consumers, as opposed to the similar Taxi, which was aimed at fleet buyers.

Checker Motors Corporation was a Kalamazoo, Michigan, vehicle manufacturer and tier-one subcontractor that manufactured taxicabs used by Checker Taxi. Morris Markin established the company in 1922, initially named the Checker Cab Manufacturing Company, in Chicago through a merger of Commonwealth Motors and Markin Automobile Body. The manufacturer moved to Kalamazoo in 1923 and was renamed to Checker Motors in 1958.