Alexander Graff (24 August 1879 – 10 October 1956) was an Australian politician.
He was born in Woolloomooloo to pawnbroker Alexander Graff and Sarah Seymour.
He attended Cleveland Street Public School, and from 1900 was a storekeeper in Drummoyne.
On 16 November 1912 he married Adela Ada Eldridge, with whom he had two daughters.
In 1916 he was elected to the New South Wales Legislative Assembly as the Liberal member for Drummoyne.