Acremaster was a line of large articulated four-wheel drive tractors built in Australia during the 1970s and 1980s. Acremaster was founded by Laurie Phillips in Merredin, Western Australia. After an ownership change, Acremaster built tractors for IH Australia for two years just prior to International being purchased by Case. Horwood Bagshaw purchased Acremaster in 1985 and offered custom-order tractors until 1987.