Douglas Wakiihuri (born September 26, 1963 in Mombasa) is a former Kenyan long-distance runner, who won the gold medal in the marathon at the 1987 World Championships in Athletics in Rome.
No other male Kenyan runner had ever won the marathon at World Championships or Olympic Games until 2007, when Luke Kibet became a world champion. The following year, Wakiihuri won the silver medal at the 1988 Summer Olympics in Seoul, finishing behind Gelindo Bordin.
In 1989 Wakiihuri won the London Marathon. In 1990 he won the New York Marathon. Wakiihuri was famous for wearing white gloves during races. He now runs a marathon fitness center and training school.