Mary Jepkosgei Keitany (born 18 January 1982) is a Kenyan long distance runner.
She is the world record holder in a women-only marathon, having won the 2017 London Marathon in a time of 2:17:01.
As of November 2019, she sits third all-time at both the marathon and half marathon.
Her former half marathon best of 1:05:50 (2011) lived three years as the women's world record.
She also has held the world record at 10 miles (50:05 minutes), 20 kilometres (1:02:36), and 25 kilometres (1:19:53), all of which were set in road races.
In August 2018 she was honored by the Shoe4Africa foundation who funded and built the Mary Keitany Shoe4Africa school in Torokwonin, Baringo County, Kenya.
She, and her husband Charles, sit on the Shoe4Africa school board.