Jason Christopher Dellaero (born December 17, 1976) is an American former shortstop in Major League Baseball.

[1] Dellaero was drafted by the New York Yankees in the 17th round of the 1994 Major League Baseball draft out of Brewster High School in Brewster, New York but did not sign because the Yankees wanted him to pitch.

[2] Dellaero made his major league debut on September 7, 1999 against the Anaheim Angels.

[1] Dellaero struggled in subsequent seasons in the minors despite several adjustments including batting exclusively from the right side of the plate and visiting a sports psychologist.

[4] In 2002, the White Sox tried using Dellaero as a pitcher; he put up an earned run average of 8.47 in 17 minor league innings.