Ronald Leendert Brouwer (born 24 April 1979 in Hellevoetsluis, Zuid-Holland) is a field hockey striker from the Netherlands, who won the silver medal with the Dutch national team at the 2004 Summer Olympics in Athens.
He is the cousin of Matthijs Brouwer.
He played a total of 220 games for the Dutch national team in which he scored 80 goals.