Callaghan is a suburb in Newcastle, New South Wales, Australia. Newcastle’s central business district is 10 kilometres away. It is home to the University of Newcastle’s main campus. On NSW TrainLink’s Hunter Line, it is served by Warabrook railway station. The Forum Sports and Aquatic Centre, which is part of the University of Newcastle, has a heated indoor pool, five outdoor ovals, and a gymnasium. It was open to the general public when it first opened.