|Full name||Jeroen Piket|
|Born|| 27 January 1969
Leiden, The Netherlands
|Peak rating||2670 (January 1995)|
Jeroen Piket (born 27 January 1969 in Leiden, The Netherlands) is a retired Dutch chess player who earned the Grandmaster title in 1989. He won the Dutch Chess Championship in 1990, 1991, 1992, and 1994. Other notable results include a second place at the Hoogovens tournament 1997. He drew a match against Anatoly Karpov held 21 February to 2 March 1999 in Monaco, by the score 4-4 (all eight games were drawn). The following year he won an internet tournament organised by kasparovchess.com, beating Garry Kasparov in the final.
Piket won the Vlissingen Open in 2001, but retired from chess in the same year to become the personal secretary of businessman Joop van Oosterom. A few years later, in 2005, Van Oosterom won the Correspondence chess World Championship, causing Tim Krabbé to write: "The Turk was operated by William Schlumberger, Mephisto was operated by Isidore Gunsberg, Ajeeb was operated by Harry Pillsbury and Joop van Oosterom is operated by Jeroen Piket."
- 1994: Winner Dortmund - 1997: 2nd place Wijk aan Zee - 1999: Winner Biel