Piotr Łukasz Gruszka (born 8 March 1977) is a former Polish volleyball player, member of the Poland men's national volleyball team in 1995–2011, participant of the Olympic Games (Atlanta 1996, Athens 2004, Beijing 2008), 2009 European Champion, silver medalist of the 2006 World Championship, bronze medalist of the 2011 World League and 2011 European Championship, five–time Polish Champion (1995, 1997, 2005, 2007, 2008), volleyball coach.