Timothy John "Tim" Chadwick (4 October 1962 – 17 March 2010) was a New Zealand artist, motoring enthusiast and author.
His mixed media paintings have been exhibited at the Govett-Brewster Art Gallery, New Plymouth, the Manawatu Art Gallery in Palmerston North, and dealer galleries in Auckland and Wellington, as well as at the Lincoln Center, New York and in Australia and the United Kingdom.
His paintings are held in the Massey University collection, the James Wallace collection of New Zealand art and several private collections in San Francisco, Melbourne, London and throughout New Zealand.
Chadwick had also had more than a dozen non-fiction books published, including Tractors in New Zealand and Saloon Motorsport in New Zealand.
He turned to writing after suffering "artist's block", and his first books featured paintings of the cars they discussed.
He also wrote for NZ Classic Car magazine, a local New Zealand newspaper and occasionally New Zealand Truck and Driver magazine.
His artwork often had crossovers with his motoring writing, for example, a major series of work created in the late-1980s and early-1990s was painted on second hand car bonnets (hoods).
A later work featured Abel Tasman, an Austin Tasman car and the now extinct thylacine (Tasmanian tiger).