Gregory James Hargrove (born March 4, 1959) is a former politician in New Brunswick, Canada.
The CoR party went through numerous leadership disputes, and Hargrove eventually became the leader in July 1995 shortly before that year's election.
The CoR party failed to win any seats in the legislature in the 1995 election.
Hargrove attempted to re-enter the House in a 1997 by-election in Tantramar, but finished a distant fourth of four candidates, getting only 2.5% of the vote, compared to 10% for the CoR candidate two years earlier.
He continued to the lead the party until after the writs were dropped for the 1999 election, but declined to contest a seat and resigned the leadership.