Sir John Bowser (2 September 1856 – 10 June 1936),[1] Australian politician, was the 26th Premier of Victoria.

He was Minister of Public Instruction in the Liberal government of Thomas Bent in 1908–1909, but thereafter did not hold office again until he became Premier.

In 1917, the Liberal Premier, Alexander Peacock, increased country rail fares, arguing that the Victorian Railways would otherwise become insolvent.

He rescinded Peacock's rail fares increases, but had no answer to the larger problem of railway finances.

Bowser, who had little taste for office, immediately resigned, and a Peacock Liberal, Harry Lawson, formed a composite ministry of the various Liberal factions, with Bowser as Chief Secretary and Minister for Public Health, posts he held until 1919.