Edith Chewangel Masai (born April 4, 1967) is a Kenyan track athlete. Her best achievements are three individual gold medals in the IAAF World Cross Country Championships.

Masai was born in Chepkoya village, Bungoma District. She competed during her high school days while at Kibuk Secondary School. She graduated in 1988. She joined Kenya Prisons Service in 1990, known for recruiting many talented athletes. Masai did not, however, achieve anything until 1999, when she became a the national cross-country champion, at the age of 34. Consequently, she started training more seriously

She currently lives in Nairobi and Trier, Germany. She is a mother of a boy.