Dejan Zavec, best known as Jan Zaveck, is a Slovenian former professional boxer who competed from 2003 to 2015. He held the IBF welterweight title from 2009 to 2011, and challenged once for the WBA super-welterweight title in 2015. Zaveck is the only Slovenian boxer to have held a world title, and was named Slovenian Sportsperson of the Year in 2010.