John Coffin (1756 – May 12, 1838) was a British army officer, merchant, judge, enslaver and political figure in New Brunswick.
Many of his descendants became investors, merchants, enslavers, business owners, and captains or masters of vessels dealing in the triangle trade.
Other descendants became anti-slavery activists and abolitionists who worked with both free and enslaved blacks to expand the underground railroad network in the US.
In April of 1783, a man named Mr. Greentree sold three people who had been forced into slavery to Major John Coffin.
The enslaved people came to New Brunswick on the vessel "PEGGY," which was commanded by a ship Master named Jacob Wilson.