Robert Towers Gillies (1876 – 26 July 1941) was an Australian politician.
He was born on the Paterson River to farmers Dugald and Mary Gillies.
He attended public school at Pimlico and worked as a blacksmith.
In 1925 he was elected to the New South Wales Legislative Assembly as one of the Labor members for Byron, but he was expelled in 1927 for his opposition to Jack Lang.
After leaving politics he became a commercial agent in Fairfield and then at Lismore before returning to Tweed Heads around 1935.