Nadia Petrova (pee-TROH-vuh; Russian: , Nadézhda Petróva; born June 8, 1982, Moscow, Russia) is a professional tennis player from Russia.

Petrova's career high ranking is World No. 3, a ranking she achieved after beating Justine Henin in the final of the Qatar Telecom German Open held in Berlin in May 2006. She has reached the French Open semi-finals twice in her career, once in 2003 and again in 2005. As of March 3 2008, she is the No. 16 player in the world.