Leopoldus ("Leo") Eduardus Theoduris Peelen (16 July 1968 - 24 March 2017) was a Dutch track cyclist. He won the silver medal at the 1988 Summer Olympics in Seoul in the points race. The following year, he captured a bronze medal at the 1989 World Championships. Peelen became six times Dutch champion on the track (Pointsrace in 1983, 1984, 1985 (winter), Individual Pursuit 1986 and Madison 1987 and 1988).