Ust-Luga is a settlement and railway station in Kingiseppsky District of Leningrad Oblast, Russia, near the Estonian border, situated on the Luga River near its entry into the Luga Bay of the Gulf of Finland, about 110 kilometres (68 mi) west of St. Petersburg.

Kingiseppsky District is an administrative and municipal district (raion), one of the seventeen in Leningrad Oblast, Russia. It is located in the southwest of the oblast and borders with Ida-Viru County of Estonia in the west, Lomonosovsky District in the northeast, Volosovsky District in the east, and with Slantsevsky District in the south. In the north and northwest it is washed by the waters of the Gulf of Finland. The area of the district is 2,908 square kilometers (1,123 sq mi). Its administrative center is the town of Kingisepp. Population : 19,830 (2010 Russian census); 20,408 ; 34,081 (1989 Soviet census).. Including the entire district: 78,183 (2010 Russian census);.