Robert Gillies was a 19th-century Member of Parliament in Otago, New Zealand. He was born in Rothesay on the Isle of Bute, Scotland.

The 1884 New Zealand general election was held on 22 July to elect a total of 95 MPs to the 9th session of the New Zealand Parliament. The Māori vote was held on 21 July. A total number of 137,686 (60.6%) voters turned out to vote. In 11 seats there was only one candidate.