Major William Adolphus Chaffey (18 February 1915 – 4 March 1987) was an Australian farmer, distinguished soldier and long serving member of the Parliament of New South Wales.

[4] He served in the 2/5th Independent Company, and was twice mentioned in despatches, as well as winning the United States' Bronze Star Medal.

[1] He was deposed as deputy leader by Davis Hughes in 1968 and dropped from the ministry in the aftermath, despite the support of the Primary Producers' Union.

[14] Always known for being independently minded, Chaffey was reported to have become increasingly estranged from his Country Party colleagues after his 1968 ouster.

On 21 September 1972, he resigned from the Country Party when the government of which it was part refused to discuss a motion he had put forward concerning parliamentary security.