Jacco Folkert Eltingh (born 29 August 1970) is a former professional male tennis player and former world No.

Eltingh is the youngest player in the Open Era to achieve the career Grand Slam in men's doubles.

Eltingh reached his career-high singles ranking in February 1995, when he climbed to world No.

19, notably reaching the quarterfinals of both the Australian Open and Wimbledon in 1995.

In November 2005, Eltingh was elected to the ATP Board as the player representative for Europe.