Alexander Robertson (14 February 1779 – 17 December 1856) was an English politician.
He was elected at the 1818 as one of the two Members of Parliament (MPs) for the rotten borough of Grampound in Cornwall,[1] and was re-elected in 1820.
The borough was disenfranchised in 1821 for gross corruption, but its two MPs retained their seats until the dissolution of Parliament in 1826.