Henri-Benjamin Rainville (French pronunciation: [ɑ̃ʁi bɛ̃ʒamɛ̃ ʁɛ̃vil]; April 5, 1852 – August 10, 1937) was a Canadian lawyer, politician and Speaker of the Legislative Assembly of the Province of Quebec.

Born in Sainte-Marie-de-Monnoir, Quebec, the son of Felix Rainville, a farmer of French descent from Touques (Calvados), and Marie Daignault, Rainville obtained his elementary and classical education at the colleges of St. Hyacinthe and Ste.

Angele de Monnoir, afterwards entering the law faculty of McGill University, and graduating with the degree of B.C.L.

He was a member of the Montreal City Council from 1882 until 1900, sitting for Centre Ward.

He was first elected to the Legislative Assembly of Quebec for Montréal division no.