Job Kienhuis (born November 7, 1989) is a Dutchswimmer who mainly specializes in the middle- and long freestyle events. He is currently training under the guidance of former world champion Marcel Wouda alongside olympic champion Hinkelien Schreuder. He owns three national records, two in long course 800 m and 1500 m freestyle. In short course he has one national record, 1500 m freestyle.
In December 2008 at the Swim Cup Eindhoven 2008 he broke the national records in the 800 m and 1500 m freestyle, long course. Two weeks later at the national short course champions he lowered the national record at the 1500 m freestyle.