May Brothers and Company was an engineering and manufacturing firm founded in Gawler, South Australia in 1885 by Frederick and Alfred May.

Gawler is the oldest country town on the Australian mainland in the state of South Australia. It was named after the second Governor of the colony of South Australia, George Gawler. It is about 40–44 km (25–27 mi) north of the state capital, Adelaide, and is close to the major wine producing district of the Barossa Valley. Topographically, Gawler lies at the confluence of two tributaries of the Gawler River, the North and South Para rivers, where they emerge from a range of low hills.