Nadzeya Ostapchuk (Belarusian:Надзея Астапчук, Nadzeya Astapchuk; Russian:Надежда Остапчук, Nadezhda Ostapchuk; born October 28, 1980) is a Belarusianshot putter. She briefly became the Olympic Champion in 2012, but was subsequently stripped of the title for failing a drug test and the gold medal was awarded to New Zealand shot putter Valerie Adams. She was World Champion in 2005, but in March 2013, the IAAF reported that her drug test sample from that event had been retested and found to be positive.
Ostapchuk was bronze medallist at the 2008 Beijing Olympics and was the World Indoor and European Champion in 2010. Her overall personal best of 21.70m that year is the fourth best women's all-time distance indoors. She is a four-time runner-up at the World Indoor Championships and a three-time World Championships silver medallist outdoors. She holds the Championship record for the former event, with her winning throw of 20.85m in 2010. In continental competition, she was the 2005 European Indoor champion and came second at the 2006 European Athletics Championships. In addition to her medal in Beijing, she was fourth at the 2004 Athens Olympics.