Robert Alexander Barel (born 23 December 1957 in Amsterdam) is a Dutch former professional triathlete.
Originally a swimmer, Barel competed and won his first triathlon in 1982 (Amsterdam). Won the very first ETU European Championships in 1985 (Immenstadt). Competed in the first ITU World Championships in 1989 (Avignon, 5th place). Won the first ITU Long Distance Championships in 1994 (Nice). Competed in the first Olympic triathlon at the 2000 Summer Olympics. He took forty-third place with a total time of 1:55:36.69 at the age of 42.