Hellen Onsando Obiri (born 13 December 1989) is a Kenyan middle- and long-distance runner. She is a two-time Olympic 5000 metres silver medallist from the 2016 Rio and 2020 Tokyo Olympics, where she also placed fourth over the 10,000 metres. She is a two-time world champion after winning the 5000m in 2017 and again in 2019, when she set a new championship record. Obiri also took bronze for the 1500 metres in 2013 and silver in the 10,000m in 2022. She won the 3000 metres race at the 2012 World Indoor Championships, claimed silver in 2014, and placed fourth in 2018. She holds the Kenyan national records for the mile, 3000 metres both out and indoors, and 5000 metres events.