David A. Harlock (born March 16, 1971) is a Canadian former professional ice hockey defenceman.

Internationally, Harlock was on the team that represented Canada at the 1994 Winter Olympics.

As a youth, he played in the 1984 Quebec International Pee-Wee Hockey Tournament with the Toronto Red Wings minor ice hockey team.

[2] Selected by the New Jersey Devils in the 1990 NHL Entry Draft, Harlock played for the Toronto Maple Leafs, Washington Capitals, New York Islanders, and Atlanta Thrashers.

He played a total of 212 regular season games, scoring 2 goals and 14 assists for 16 points, collecting 188 penalty minutes.