Franciscus Ronaldus ("Ronald") Maria Jansen (born 30 December 1963 in Sint-Michielsgestel) is a former field hockey goalkeeper from the Netherlands, who twice won the golden medal at the Summer Olympics.
He played a total number of 183 international matches for his native country, and made his debut on 23 June 1987 at the 1987 Men's Hockey Champions Trophy in the match against Argentina.