Mohammed Tlili ben Abdallah, also known as Moham(m)ed Gammoudi, is a Tunisian athlete who competed as a long-distance runner in international track and field competitions. He represented Tunisia in the Tokyo, Mexico City, and Munich Olympiads and recorded four medals, including a gold medal in the 5000 metres event in Mexico City. Gammoudi was also competitive at 10,000 metres.

The 5000 metres or 5000-metre run is a common long-distance running event in track and field, approximately equivalent to 3 miles 188 yards or 16,404 feet 2 inches. It is one of the track events in the Olympic Games and the World Championships in Athletics, run over 12+1⁄2 laps of a standard track. The same distance in road running is called a 5K run; referring to the distance in metres rather than kilometres serves to disambiguate the two events. The 5000 m has been present on the Olympic programme since 1912 for men and since 1996 for women. Prior to 1996, women had competed in an Olympic 3000 metres race since 1984. The 5000 m has been held at each of the World Championships in Athletics in men's competition and since 1995 in women's.