Aliphine Chepkerker Tuliamuk (born 5 April 1989) is a Kenyan-born American long-distance runner. She placed first at the 2020 Olympic Marathon trials in Atlanta and represented the United States at the 2021 Olympic Games in Tokyo, Japan. Tuliamuk has been a world class athlete since placing 9th in 21:09 at 2005 IAAF World Cross Country Championships – Junior women's race. Tuliamuk ran 33:43 to place 15th at 2017 IAAF World Cross Country Championships. Tuliamuk placed 3rd at 2019 Rotterdam Marathon in 2:26:50.