Arnold Bernard Tusa (born August 23, 1940) is a Canadian politician, who represented the electoral district of Last Mountain-Touchwood in the Legislative Assembly of Saskatchewan from 1982 to 1991.
A member of the Saskatchewan Progressive Conservative Party, he served as Speaker of the Legislative Assembly in his second term in office from 1986 to 1991.Born in Cupar, Saskatchewan, he received a B.Ed.
from the University of Saskatchewan.
Tusa taught school in Saskatchewan and later operated a farm.