Casselman (November 3, 1861 – November 15, 1950) was an Ontario merchant and political figure.
He represented Dundas in the House of Commons of Canada from 1917 to 1921 as a Unionist member.
He was born in Chesterville, Canada West, the son of James C.
Casselman, and was educated in Morrisburg and Hamilton.
He taught school for two years before opening a general store in Chesterville.
In 1905, he married Alin Sanders.
Casselman was a recruiting officer and served overseas during World War I.
He was defeated in the 1921 general election.
His half-brother William H.
Casselman served in the Ontario provincial assembly.