Kula (, "tower") is a town in northwestern Bulgaria. It is the administrative centre of Kula Municipality part of Vidin Province. Located just east of the Serbian-Bulgarian border, it is the third largest town in the province after Vidin and Belogradchik. Kula lies 30 kilometres west of Vidin and 13 kilometres east of the border checkpoint at Vrashka Chuka. As of December 2009, the town has a population of 3,287 inhabitants.