Beatrice Chepkoech Sitonik (born 6 July 1991) is a Kenyan long-distance runner who specialises in the 3000 metres steeplechase. She won gold medals at the 2019 World Championships, and 2018 African Championships. Chepkoech took also bronze in the 1500 metres at the 2015 African Games. She is the current world record holder in 3000 m steeplechase with a time of 8:44.32 set in 2018 in Monaco. With that mark she became the first woman to break the 8:50 and 8:45 barriers. Chepkoech is a two-time 3000 m steeplechase Diamond League champion.