Sirajganj, a town of British India, in the Pabna district of Eastern Bengal and Assam, on the right bank of the Jamuna or main stream of the Brahmaputra, 6 hours by steamer from the railway terminus at Goalundo. It is the chief river mart for jute in northern Bengal, with several jute presses. The jute mills were closed after the earthquake of 1897. Pop. (1901) 23,114.