Joo Sae-hyuk (, ; born 20 January 1980) is a South Korean table tennis player. As a singles player, he was a silver medalist at the 2003 World Table Tennis Championships, a bronze medalist at the 2011 Table Tennis World Cup, and a bronze medalist at the 2010 and 2014 Asian Games. In the team event, as a member of the South Korean National Team, he was a silver medalist in the 2002, 2006, 2010, and 2014 Asian Games; the 2006 and 2008 World Championships; and the 2012 Summer Olympics.