Algoma was an electoral riding in Ontario, Canada.

It was created in 1867 at the time of confederation.

In 1885 it was split into two: Algoma East and Algoma West.

In 1902 it was re-established as a single riding and was abolished in 1933 before the 1934 election.

In 1967 it was re-established a second time and lasted until 1999 when it was merged into Algoma—Manitoulin.