Rebecca Cheptegei (22 February 1991 – 5 September 2024) was a Ugandan cross country, long-distance and marathon runner, who was the national record holder in the latter discipline and a former world champion in mountain running.

She was killed in September 2024 by her former partner, Dickson Ndiema Marangach, who doused her with petrol and set her alight, reportedly over a land dispute in Kenya.

[9] She finished 15th in the U20 race in the 38th IAAF World Cross Country Championships at Myslecinek Park in Bydgoszcz, Poland, in 2010.

[11] In 2011, Cheptegei started the year finishing 55th in the senior race final at the 39th IAAF World Cross Country Championships,[13] Punta Umbria.

[14] She came in 2nd in the Cantalejo Half Marathon before finishing off 10th at the 10 km race at the Lisbon São Silvestre da Amadora.

[21] Due to COVID-19 restrictions, Cheptegei did not race again until 2021, when she earned 3rd and 5th place finishes in the 4th and 7th UAF Trials at Mandela National Stadium in Kampala respectively.

[23] In the same year, she set a Ugandan national record of 2:22:47 in the marathon event, and won the postponed 2021 World Mountain and Trail Running Championships in Chiang Mai, Thailand.

[31] Cheptegei died due to multiple organ failure as a result of her burns at the Moi Teaching and Referral Hospital in Eldoret on 5 September, at the age of 33.

[37] On 6 September, the Mayor of Paris, Anne Hidalgo, announced the city will honour Cheptegei by naming a sports venue after her.

[39] Officials in Bukwo proposed naming a road and a sports venue after her,[37] while the Ugandan government pledged to provide around $13,000 to each of Cheptegei's children.