Robert Alexander Mulholland (May 16, 1860 – October 1, 1927) was an Ontario businessman and political figure.
He was born in Alderville, Canada West in 1860, the son of Robert Mulholland.
He managed a branch at Port Hope of the hardware and grocery business established by his father and Peter Brown.
Mulholland served as mayor of Port Hope from 1910 to 1912.
He was named to the Senate by Robert Laird Borden in 1918 and died in office in 1927.