Joyce Chepkirui (born 20 August 1988) is a Kenyan long-distance runner who competes in road running events.

She travelled to Spain and had top five finishes in a number of races, highlighted by a win in Almodóvar del Río with a time of 1:11:47 hours.

She won a series of Spanish races, taking titles in Alicante, Torrevieja, Albacete, San Sebastián and Logroño.

[12] She set a personal best and course record of 1:09:04 hours to win at the Göteborgsvarvet in Sweden in May, then ran a world leading time of 30:43 minutes for the 10K in Appingedam.

[15] She won the Tilburg 10K in September and her time of 30:38 minutes was the fastest in the world that year and made her the fifth quickest ever over the distance.

[16][17] Chepkirui was chosen to compete for Kenya in the 1500 m at the 2011 All-Africa Games and she came away with a silver medal behind her compatriot Irene Jelagat.

[19] The Zatopek 10 was her last outing of the year and she ran a 10,000 metres best and course record of 31:26.10 minutes to continue her long-distance winning streak.

A poor showing of 33:01 minutes for eighth came at the Ottawa 10K a month later, but she had a string of victories in the second half of the year, winning the Beach to Beacon 10K, Falmouth Road Race, Dam tot Damloop, Singelloop Utrecht and the Grand 10 Berlin.

[37] She was subsequently stripped of this title by a ruling of the Court of Arbitration for Sports, due to anomalies in her athlete biological passport.