Robert Thomson Robinson (18 January 1867 – 19 September 1926) was an Australian lawyer and politician who was a member of the Legislative Assembly of Western Australia from 1914 to 1921, representing the seat of Canning.

[1] His family moved to Victoria in 1873, where his younger brother, Herbert Robinson, was born, and then to Albany, Western Australia, in June 1878.

Entering the legal profession, he was articled to Edward Hare of Albany and Septimus Burt of Perth, eventually becoming an associate to Sir Alexander Onslow, the Chief Justice of Western Australia.

[3] He was elevated to the ministry in July 1916, when Frank Wilson replaced John Scaddan as premier, and was named Attorney-General and Minister for Mines.

When that fell one month later, he retained the forests and mines portfolios in the new Mitchell government, but was replaced as Attorney-General by Thomas Draper.