Robert Hamilton Erskine (25 June 1905 – 18 September 1982) was an Australian politician.
He was born at Merewether to tram driver Richard Hamilton Erskine and Anne Bland Craig.
From 1917 he was a milkman's assistant and subsequently a commercial traveller's buggy boy, eventually becoming a textile worker.
He was active in the Australian Textile Workers' Union, serving on the management committee from 1928 and as secretary and treasurer from 1941 to 1962.
From 1949 to 1973 he was a Labor member of the New South Wales Legislative Council.