Olga Kotlyarova (born April 12, 1976 in Sverdlovsk) is a Russian runner.
She used to compete mainly in 400 metres, and has an Olympic bronze medal from 2000 in relay.
She is also a world champion (indoor and outdoor) in this event.
In 2005, she concentrated more on the 800 metres distance, managing to set a new personal best and to finish fourth at the World Athletics Final.
In August 2006 she became the European Champion on the 800 metres.