Robert Wilkin (1820–1886) was a 19th-century Member of Parliament in Canterbury, New Zealand.
He represented the Kaiapoi electorate from to 1866, when he retired.
He was a member of the Canterbury Provincial Council. At first, he represented the Timaru electorate (1860–1862), then the Town of Timaru electorate (1862–1864) and then the Waitangi electorate (1864–1866). From July 1860 to November 1863, and from October 1866 to March 1868, he was a member of the Canterbury Executive Council. He was the province's Deputy Superintendent from 19 July to 14 September 1863.
. Guy Scholefield . New Zealand Parliamentary Record, 1840–1949 . 3rd . First ed. published 1913 . 1950 . Govt. Printer . Wellington.