Alexander Hall Roe (1842 – July 12, 1884) was an Ontario merchant and political figure.
He represented Lennox in the Legislative Assembly of Ontario as a Conservative member from 1883 to 1884.
He was born in Westport, Frontenac County in 1842 and studied at Victoria College in Cobourg.
He studied law in Napanee but then moved to Forest Mills where he operated a general store, a sawmill and a gristmill.
He was defeated by George Douglas Hawley in the 1879 general election but then won the Lennox seat in 1883.