Acremaster was a series of sizable articulated four-wheel drive tractors manufactured in Australia during the 1970s and 1980s. The company was established by Laurie Phillips in Merredin, Western Australia. Following a change in ownership, Acremaster produced tractors for IH Australia for a period of two years, just before International was acquired by Case. In 1985, Horwood Bagshaw acquired Acremaster and continued to provide custom-order tractors until 1987.