Olga Cristea (born 13 December 1987) is a Moldovan runner who specializes in the 800 metres.

Her personal best time is 2:00.12 minutes, achieved at the 2008 Olympic Games in Beijing.

She also competed at the Olympic Games in 2004 and 2008, but without reaching the final.

[1] She received a two-year ban from the sport in July 2010 after testing positive for abnormal levels of testosterone.

This biographical article relating to Moldovan athletics and track and field is a stub.