Casula is a suburb of Sydney, Australia, located in the City of Liverpool. It is located in the south-western suburbs of Sydney, about 30 kilometres south-west of the Sydney central business district. The suburb is mainly residential, with some commercial and industrial areas. The main shopping centre is Casula Mall, which is located on the Hume Highway. The suburb is home to a number of parks and reserves, including the Casula Powerhouse Arts Centre, which is a multi-arts centre located in the former power station. Casula is also home to the Casula Railway Station, which is on the Airport, Inner West & South Line of the Sydney Trains network.