Frederick William Brawn (21 November 1857 – 24 July 1936) was an Australian politician.
He was born in Creswick to storekeeper James Brawn and Sarah Pearce. He attended Creswick Grammar School and became a commission agent in Bloomfield and then a shareholder in Ballarat. On 27 April 1886 he married Alice Vipond; later, following her death in 1917, he would marry Florence Reddin on 14 June 1919. He was also later a farmer at Dowling Forest. He served on Ballarat City Council from 1904 to 1919, and was twice mayor (1907–08, 1915–16). In 1907 he won a by-election for Wellington Province in the Victorian Legislative Council. A non-Labor member, he would later join the Liberal, Nationalist and United Australia parties. He was a minister without portfolio from March to July 1924 and again from July to December 1929. He retired in 1934 and died in Ballarat in 1936.