Brian Wilfred Hewat (1894 – 28 February 1970) was a New Zealand barrister and politician who served as the mayor of Invercargill from 1950 to 1953.

He attended Waitaki Boys' High School and the University of Otago, where he achieved a Bachelor of Laws.

During World War I he served with the Otago Mounted Rifles Regiment[1] in Gallipoli and France.

[2][3] In 1950, Hewat intended to challenge incumbent mayor William Aitchison, who had been serving since the death of Abraham Wachner in August.

However, Aitchison withdrew his nomination on 7 November and Hewat was elected mayor unopposed.