Arnold Wienholt, senior, (22 January 1826 – 16 January 1895) was a politician in Queensland, Australia. He was a Member of the Queensland Legislative Assembly, representing Warwick from 10 June 1863 to 25 June 1867. Wienholt was born in Laugharne, Wales and arrived in Australia c. 1847.[1] His brother Edward Wienholt was also a Member of the Queensland Legislative Assembly and a landowner.