William Austin Whiting (August 5, 1855 – January 18, 1908)[1] was an American lawyer and politician of the Kingdom, Republic, and Territory of Hawaii.

His ancestors included Massachusetts colonial governors Thomas Dudley and Simon Bradstreet, and Reverend John Cotton.

[2] Whiting resettled in the Hawaiian Islands in 1880 where his uncle James W. Austin was an associate justice of the Supreme Court of the Kingdom of Hawaii.

[2] In 1891, the newly enthroned Queen Liliuokalani appointed him as Attorney General succeeding Arthur P. Peterson of the hold-over cabinet from the reign of King Kalākaua.

[5][8] Following the unsuccessful Royalist counter-revolution, Whiting headed the military tribunal which sentenced Liliuokalani for misprision of treason.

On January 11, 1896, he was appointed Second Associate Justice of the Supreme Court of the Republic of Hawaii succeeding the vacant seat left by the death of Richard Frederick Bickerton.