The Municipality of Leichhardt was a local government area in the inner-west region of Sydney, New South Wales, Australia about 10 kilometres west of the Sydney central business district. On 12 May 2016, Leichhardt merged with the Marrickville Council and the Municipality of Ashfield to form the Inner West Council.
Leichhardt is named after the Prussian explorer Ludwig Leichhardt, who in the 1840s was feted for his 4,800 kilometres expedition in search of an overland route from southern Queensland to Port Essington, who later famously vanished without trace.
Leichhardt Park includes the Aquatic Centre in Lilyfield, as is Leichhardt Oval in Mary Street, the homeground of the Wests Tigers.
The Bay Run around Iron Cove is famous for cycling, walking and running, passing along the foreshore of Lilyfield and Rozelle, and linking to paths along Hawthorne Canal on the western border of Leichhardt.