The Hawthorne Canal, a southern tributary of the Parramatta River, is a heritage-listed[1][2] artificial waterway located in the western reaches of Sydney Harbour, in the Inner West suburbs of Lewisham, Summer Hill, Haberfield and Leichhardt in New South Wales, Australia.

The canal was originally a natural waterway known as Long Cove Creek, that has been straightened and given artificial banks.

In January 1890 a team of thirty men, employed by the Harbours and Rivers Department, began clearing the mangroves that lined the banks of Long Cove Creek.

Within twelve months a navigable stretch of water would exist between Iron Cove and Marion Street.

Some housing development had already occurred close to the banks of the creek when parts of the Dobroyd Estate were subdivided in the 1880s, and there was a good deal of local pressure for the extension of the canal to Battle Bridge on Parramatta Road so that the new waterway could be brought within reach of centres of denser population.