Reginald Walter Darcy Weaver (18 July 1876 – 12 November 1945) was an Australian conservative parliamentarian who served in the New South Wales Legislative Assembly for 28 years.

Following the success of the United Australia Party in the 1932 election, Weaver returned as the Secretary for Public Works and Minister for Health in the Stevens ministry.

In 1935 he was dropped from the ministry but was later elected as the Speaker of the New South Wales Legislative Assembly in 1937, holding office until the Mair Government lost power in 1941.

Weaver was educated at Newington College (1890–1894) in Sydney[2] before joining two of his brothers in a stock and station agency in Forbes and then branching out on his own at Condobolin and Narrandera.

[1] Moving to North Sydney in 1916, he established a real estate business and on 24 March 1917 entered the New South Wales Legislative Assembly at the 1917 election, as the Nationalist Party candidate for the seat of Willoughby with 51.68%.

[6] Suspicious of the Irish Catholic establishment, embodied by the Labor Party, Weaver joined the Protestant Federation in 1921 and became a sympathiser of the right-wing New Guard.

[9] Rising to prominence within the party, Weaver gained a reputation as an independent-minded but powerful debater in the House, crossing the floor on many issues.

[1] This promotion proved short-lived however, when the Bavin Government was defeated at the October 1930 election, at which Weaver was returned with 65.42%,[10] by Jack Lang's Labor Party.

When Lang's Government was dismissed on 13 May 1932 by the Governor of New South Wales, Sir Philip Game, an early election was called by caretaker-Premier and UAP Leader, Bertram Stevens.

His strict control over Hospital administrators brought him into conflict with the medical community and he was eventually dropped from the cabinet on 10 February 1935 by Premier Stevens, who found him "too extreme in personal independence" and possessing a "needlessly sharp tongue.

In 1938, he was cleared by a judicial inquiry, chaired by Sir Percival Halse Rogers, into Jack Lang's allegations of fraud and corruption in the sale of state enterprises in 1933 when Weaver was the Secretary for Public Works.