Étienne-Ferréol Roy (1771 – November 22, 1852) was a seigneur and political figure in Lower Canada.
He represented Hertford in the Legislative Assembly of Lower Canada from 1804 to 1820.
He was born in Beaumont, the son of seigneur Joseph Roy and Gabrielle Sarault.
He was a major in the militia, reaching the rank of lieutenant-colonel in 1815.
His sister Marie-Gabriel married Louis Blais.