Leopoldus Eduardus Theoduris "Leo" 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). On 24 March 2017, Peelen died unexpectedly at the age of 48.