The Lennox Bridge is a heritage-listed sandstone single arch bridge across the Parramatta River, located in Parramatta in Western Sydney, New South Wales, Australia. The bridge was designed by and built under the supervision of David Lennox, the first Colonial Superintendent of Bridges using convict labour between 1836 and 1839. The Lennox Bridge is the third oldest surviving masonry bridge in New South Wales. The bridge carries Church Street, the main north-south street of Parramatta's central business district. It was added to the New South Wales State Heritage Register on 2 April 1999.