Sławomir Wolniak (born January 23, 1988) is a National Record holding swimmer from Poland who specializes in the breaststroke. He is a four-time Polish national champion, having captured the 50m and 100m breaststrokes in 2007, and the 100m and 200m breaststroke in 2009. He is a member of Poland's swim team for the 2009 World Championships, in Rome, Italy at the end to July.