Moses Tanui (born 20 August 1965 in Nandi District, Kenya) is a former Kenyan long-distance runner who won the gold medal over 10000 m at the 1991 World Championships in Athletics in Tokyo.
At the 1993 World Championships in Athletics in Stuttgart he finished second after a controversial incident on the final lap in which he lost one shoe after making contact with the eventual winner Haile Gebrselassie. He also won the 100th Boston Marathon in 1996 as well as the 102nd Boston Marathon in 1998. Tanui won IAAF World Half Marathon Championships in 1995 and silver in the 1997 competition.
He was the first athlete to run a half marathon below 60 minutes by running 59:47 in Milan on 03.04.1993. His world record was broken five years later by fellow Kenyan Paul Tergat.
He was still active in 2004 when he competed at the Seoul International Marathon. He retired later due to a knee injury. Today he operates a training camp in Kaptagat .
He was involved in a serious car accident near Nakuru in February 2010 suffering minor injuries. David Lelei, another former runner, was driving Tanui's car and died in the accident 
- All results regarding marathon, unless stated otherwise