Brigid Jepscheschir Kosgei (born 20 February 1994) is a Kenyan marathon runner who won the 2018 and 2019 Chicago Marathons and the 2019 London Marathon.
She is the current marathon world record holder for women running in a mixed-sex race, with a time of 2:14:04 achieved on 13 October 2019 at the Chicago Marathon.
This bettered the previous 16-year-old world record by 1 minute 24 seconds, and the women's Chicago Marathon record by 3 minutes and 14 seconds.