Gabriel George Ludlow (April 16, 1736 – February 12, 1808) was a Loyalist[2] military officer and politician who served as the first mayor of Canada's oldest incorporated city, Saint John, in then-colonial New Brunswick.

Gabriel George Ludlow was born on April 16, 1736, in Queens County, Long Island, in the Province of New York of then-British America.

[3] Ludlow served in the 3rd Battalion of the Long Island-based De Lancey's Brigade as a colonel.

[5] On May 18, 1785,[6] upon the incorporation of Saint John following the amalgamation of the Loyalist-created Parrtown and Carleton,[7] Ludlow was sworn into office as its first mayor.

His father traded slaves, and whilst his older brother, George, was the first Chief Justice of New Brunswick,[9] he also declared slavery, which he practiced, to be legal in the controversial 1799 court case R v Jones.