Florence Jepkemoi Barsosio (born 11 August 1976 in Keiyo District) is a Kenyan athlete who specialises in long-distance running. Her sister, Sally Barsosio, is also a professional runner. She has competed at world championship finals in long-distance track events, cross country running and road running. The majority of her success has come in marathon races: she won the 2000 Turin Marathon in her debut over the distance and has gone on to win marathons in Paris, Madrid, Florence and Vienna.