Lakeside Mental Hospital, originally known as Ballarat Asylum, later as Ballarat Hospital for the Insane and finally, before its closure, as Lakeside Psychiatric Hospital, was an Australian psychiatric hospital located in the suburb of Wendouree, the north-western fringe of Ballarat, Victoria, Australia. The site is now used for the Ballarat Aquatic Centre, a number of sporting facilities, and the Lake Gardens housing estate. Some original building are still standing and have been renovated and reused.