Lewisham Sewer Vent is a heritage-listed sewer vent shaft at The Boulevarde, Lewisham, Inner West Council, Sydney, New South Wales, Australia. It was designed by NSW South Wales Public Works Department and built from 1909 to 1909. It is also known as The Boulevarde Sewer Vent. The property is owned by Sydney Water. It was added to the New South Wales State Heritage Register on 15 November 2002.