Joris Willem Eelco Tjebbes (5 November 1929, Vlissingen – 31 July 2001, Hoogeveen) was a Dutch freestyle swimmer. He won a bronze medal at the 1950 European Aquatics Championships and competed at the 1952 Summer Olympics. Between 1950 and 1952, Tjebbes was the national champion in the 100 m and 400 m and set nine national records in the 100 m, 200 m and 400 m freestyle events.