Patrick Dideum (born September 16, 1981 in Albuquerque) is a male freestyle swimmer from United States. He represented his native country at the 2001 World Aquatics Championships in Fukuoka, Japan, competing in one individual event (10 km) placing 13th. In 2003, he represented the US again in the 2003 World Aquatics Championships in Barcelona, Spain this time competing in two individual events, 5 km and 10 km finishing 19th and 16th respectively and was the top American finisher in the 10 km. He retired from swimming in 2005 after competing in the USA Open Water National Championships in Ft Myers, FL where he finished 12th in the 10 km.