Arnold Wienholt (25 November 1877 – 10 September 1940) was an Australian grazier, author and politician.

Arnold Wienholt was born on 25 November 1877 at Goomburra, Queensland, the son of Edward Wienholt (a Member of the Queensland Legislative Assembly) and his wife Ellen (née Williams).

[1] He was educated in England at Wixenford School and Eton College[2] before returning to Australia as a grazier on the Darling Downs.

[3] In 1919, he was elected to the Australian House of Representatives as the Nationalist member for Moreton; he was also endorsed by the Primary Producers Union, effectively the Queensland state Country Party.

[3] Wienholt rejoined the military in 1939, at the start of World War II.