Sir Horace Archambeault (March 6, 1857 – August 25, 1918) was a politician and judge in the Canadian province of Quebec.
He was born in L'Assomption, Quebec in 1857, the son of Louis Archambeault.
In 1888, Archambeault replaced his father as representative for the division of Repentigny in the Legislative Council of Quebec.
He was to hold this position until 1908, when he was appointed a judge for the Quebec Court of King’s Bench.