Jeffrey David Hackett (born June 1, 1968) is a Canadian former professional ice hockey goaltender who played 15 seasons in the National Hockey League (NHL) with the New York Islanders, San Jose Sharks, Chicago Blackhawks, Montreal Canadiens, Boston Bruins and Philadelphia Flyers.

Behind Billy Smith and Kelly Hrudey on the Islanders' goaltending depth chart, Hackett split his first two seasons with New York and the Springfield Indians of the American Hockey League (AHL).

He led Springfield to a Calder Cup win in 1990 and was awarded the Jack A. Butterfield Trophy, annually given to the most valuable player of the playoffs.

However, after winning only two games in 1992-93, one of them a Sharks' record 57-save effort against the Kings, Hackett was dealt to the Chicago Blackhawks prior to 1993–94 and he backed up Ed Belfour for several seasons.

This signaled the end of his stint with Montreal as midway through 2002–03 he was involved in a three-way trade which sent him back to San Jose temporarily and then on to the Boston Bruins.