Kingisepp (Russian: Кингисепп, formerly Yamburg (Я́мбург)) is a town in Leningrad Oblast, Russia. It is along the Luga River. It is 138 kilometers (86 mi) southwest of St. Petersburg, 20 kilometers (12 mi) east of Narva, and 40 kilometers (25 mi) south of the Gulf of Finland. In 2010, 48,488 people lived there.