HMCS Messines was one of twelve Battle class naval trawlers used by the Royal Canadian Navy (RCN). Named after the Battle of Messines, she was built by Polson Iron Works, in Toronto, Ontario. Commissioned on 13 November 1917, she was handed over to the Department of Marine and Fisheries following her 1920 decommissioning. Converted to a lightship, like sister ships , , and , Messines was designated Lightship No. 3, and was ultimately scrapped in 1962.