HELENSBURGH, a burgh of barony and police burgh and watering-place in Dumbartonshire, Scotland, on the north shore of the Firth of Clyde, opposite Greenock, 24 m. N.W. of Glasgow by the L.N.E.R., with another station at Upper Helensburgh. Pop. (1931) 8,893. There is steamer communication with Gareloch head, Dunoon and other pleasure resorts on the western coast, and with Greenock, Glasgow, etc., from the old pier at Helens burgh. In 1776 the site began to be built upon, and in 1802 the town, named after Lady Helen, wife of Sir James Colquhoun of Luss, the ground landlord, was erected into a burgh of barony.