BJÖRNEBORG (Finnish, Pori), a district town of Finland, province of Åbo-Björneborg, on the E. coast of the Gulf of Bothnia, at the mouth of the Kumo. Lat. 51° 8′ N., long. 46° 0′ E. Pop. (1904) 16,053, mostly Swedes. Large vessels cannot enter its roadstead, and stop at Räfsö. The town has shipbuilding wharves, machine works, and several tanneries and brick-works, and has a total trade of over 16,000,000 marks, the chief export being timber.