BORGA, or Borgo, a seaport town of the Russian Grand Duchy of Finland, situated in the province of Nyland, at the entrance of the River Borga into the Gulf of Finland, about 25 miles N.W. of Helsingfors, in 60° 22' N. lat. and 25° 45' E. long. It was at one time a wealthy and handsome city, but has greatly decayed. It is still the seat of a Lutheran bishopric which extends over a large part of Finland; and it possesses a beautiful cathedral, a gymnasium (where the well-known Swedish poet Runeberg lectured for many years), and a theatre. The weaving of sail-cloth and the manufacture of tobacco are the principal industries, and the chief articles of trade are wood, butter, and meal In 1873 the value of the imports, mainly from Germany, England, and Russia, was upwards of £141,000, while that of the exports was rather under £50,000. Borga was the seat of the Finnish diet in 1809. Population, which is mostly Swedish, in 1867, 3420.