Petra Němcová (born June 24, 1979 in Karviná) is a Czech-born female supermodel. She was featured on the cover of the 2003 Sports Illustrated Swimsuit Issue, and has also modeled for Victoria's Secret, and for many other companies in the women's clothing market.

On June 3, 2004, she was one of the telecast judges during the 53rd annual Miss Universe competition in Quito, Ecuador.