George Kenyon Holden, MLC (1808 – 16 April 1874) was an Australian Crown Prosecutor, banker and politician who served on the New South Wales Legislative Council.

In correspondence with his associate John Stuart Mill, he was one of the first politicians in the world to propose proportional representation to parliament in 1861.

[1] Holden was a trustee of the New South Wales Savings Bank, a director of the Liverpool and London Fire and Life Insurance Company, the chairman of the National Schools Board, and president of the Sydney Mechanics' School of Arts.

He was private secretary to Governor Sir Richard Bourke during his term (1831–37), and was also a stipendiary magistrate at Campbelltown.

The Society worked to introduce, acclimatise and domesticate 'useful or ornamental' birds, fish, insects, vegetables and other exotic species.