Sidney de Jong (born 14 April 1979) is a Dutch former baseball player.

Sidney de Jong
Catcher
Born: (1979-04-14) 14 April 1979 (age 45) Amsterdam, Netherlands
Bats: Right Throws: Right
Medals Men's Baseball Representing  Netherlands Baseball World Cup 2011 Panama National team Intercontinental Cup 2006 Taiwan National team 2010 Taiwan National team European Baseball Championship 2001 Germany National team 2003 Netherlands National team 2005 Czech Republic National team 2007 Spain National team 2010 Germany National team

De Jong represented the Netherlands at the 2004 Summer Olympics in Athens where he and his team finished sixth. He also represented the Dutch at the 2009 World Baseball Classic in San Juan, Puerto Rico and in Miami, Florida. Following the 2011 Baseball World Cup he was knighted, along with teammate Didi Gregorius and technical director Robert Eenhoorn.