Roseworthy Agricultural College was an agricultural college in Australia. It was 50 km (31 mi) north of Adelaide and 7 km (4.3 mi) west of Roseworthy town. It was the first agricultural college in Australia, established in 1883. It is now part of the University of Adelaide.

John Daniel Custance FCS FRAS was an agricultural scientist, founder of Roseworthy College, South Australia, but was sacked by a Minister with whom he had mutual antipathy.