The Old Como railway bridge is a heritage-listed former railway bridge and now footbridge and water main carrier over the Georges River between Como and Oatley in the Sutherland Shire Council and Georges River Council local government areas of New South Wales, Australia. It was designed by John Whitton and Dept of Railways and built from 1883 to 1885 by C. and E. Millar. The property is owned by Sydney Water, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 15 November 2002.