Derartu Tulu NL COL (Oromo: Daraartuu Tulluu, Amharic: ደራርቱ ቱሉ; born 21 March 1972) is an Ethiopian former long-distance runner, who competed in track, cross country running, and road running up to the marathon distance.

Derartu comes from a sporting family of several Olympic medalists, which include her cousins Tirunesh, Genzebe and Ejegayehu Dibaba.

She sat out 1993 and 1994 with a knee injury and returned to competition in the 1995 IAAF World Cross Country Championships where she won gold, having arrived at the race only an hour before the start.

At the IAAF World Cross Country Championships Derartu lost her shoe in the race and had to fight back to get fourth place.

In 2009, at the age of 37, she won the New York City Marathon, defeating of the likes of Paula Radcliffe,[8] Lyudmila Petrova and Salina Kosgei.

In 2004 Derartu declined to enter the New York Marathon, where she would have been likely to face marathon World Record holder Paula Radcliffe, whom she has had a great rivalry with over the years,[9] and focused instead on the Olympic Games, where she won the bronze medal in the 10,000 m behind Xing Huina and her cousin Ejegayehu Dibaba.

[10] She is remembered for her speed and her 60.3 second-last lap at the end of the 10,000 m at the Sydney Olympics was a sprint of note.