Ranomi Kromowidjojo (born August 20, 1990 in Sauwerd, Netherlands) is a Dutch swimmer who mainly specializes in freestyle but also has potential in backstroke and butterfly events. As part of the Dutch team, she holds the world records in the 4×50 m and 4×200 m freestyle relays on short course (25 m pool), and 4×100 m freestyle relay on long course (50 m pool. Update: Worldchampion 100 meter Freestyle in Dubai, 17 December 2010.
