Michał Jerzy Winiarski (born 28 September 1983) is a Polish volleyball coach and former volleyball player, member of the Poland men's national volleyball team from 2004 to 2014, participant of the Olympic Games (Beijing 2008, London 2012), 2014 World Champion, gold medallist of the 2012 World League, silver medallist of the 2006 World Championship and 2011 World Cup, three–time Polish Champion (2006, 2010, 2011) and one time Italian Champion (2008), current head coach of Polish team Trefl Gdańsk.