Michal Zygmunt Ruciak (born 22 August 1983) is a Polish volleyball player, a member of Poland men's national volleyball team and Polish club Cerrad Czarni Radom, a participant of the Olympic Games London 2012, European Champion 2009 and gold medalist of the World League 2012, silver medalist of the World Cup 2011, bronze medalist of the European Championship 2011 and the World League 2011.