Ernest Albert Buttenshaw (23 May 1876 – 26 June 1950) was an Australian politician and member of the New South Wales Legislative Assembly from 1917 until 1932.

[2] With Michael Bruxner he was one of the 'true blue' progressives who refused to support a coalition government with George Fuller's Nationalists.

After the 1927 election of the Nationalist/Country coalition government led by Thomas Bavin, Buttenshaw became the Minister for Railways (1927–1929) and Secretary for Public Works (1927–1930).

He was the Acting Premier while Bavin was on a loan raising trip to the United Kingdom between April and August 1929.

[4] Buttenshaw retired at the 1938 election and died at his home in Ashfield on 26 June 1950(1950-06-26) (aged 74).