| Arnold Wienholt | |
| Constituency Mp: | Moreton |
| Parliament: | Australian |
| Predecessor: | Hugh Sinclair |
| Successor: | Josiah Francis |
| Term Start: | 13 December 1919 |
| Term End: | 6 November 1922 |
| Constituency Am1: | Fassifern |
| Assembly1: | Queensland Legislative |
| Term Start1: | 2 October 1909 |
| Term End1: | 28 March 1913 |
| Predecessor1: | Charles Moffatt Jenkinson |
| Successor1: | Ernest Bell |
| Term Start2: | 28 June 1930 |
| Term End2: | 11 May 1935 |
| Predecessor2: | Ernest Bell |
| Successor2: | Adolf Muller |
| Birth Date: | 1877 11, df=yes |
| Birth Place: | Goomburra, Queensland |
| Death Place: | Abyssinia |
| Death Cause: | Killed in action |
| Nationality: | Australian |
| Spouse: | Enid Frances Sydney Jones |
| Party: | Nationalist Party of Australia, Ministerial |
| Relations: | Edward Wienholt (father) |
| Occupation: | Grazier, soldier, author |
Arnold Wienholt (25 November 1877 – 10 September 1940) was an Australian grazier, author and politician. He was a Member of the Queensland Legislative Assembly and a Member of the Australian House of Representatives.
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.
He served in the military 1899–1902 and 1914–1916, and was a published author.
In 1909, he was elected to the Legislative Assembly of Queensland as the member for Fassifern, where he remained until 1913.[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. Although sympathetic to the Country Party, formed in 1920, he remained a Nationalist, although the Country Party often received his support. He retired in 1922. In 1930 he returned to the Queensland Legislative Assembly as the member for Fassifern, where he remained until 1935.[3]
Wienholt rejoined the military in 1939, at the start of World War II. He was killed in action in Abyssinia on 10 September 1940[4] and is memorialised at the Khartoum Memorial.[5]