Bolshaya Izhora (Russian: Больша́я Ижо́ра) is an urban locality (an urban-type settlement) in Lomonosovsky District of Leningrad Oblast, Russia, located on the southern shore of the Gulf of Finland.

The lands around Bolshaya Izhora originally belonged to Alexander Menshikov, and in the 19th century for some time to Grand Duke Michael, a brother of Tsar Nicholas I.

[9] In the beginning of the 20th century, Bolshaya Izhora was a part of Petergofsky Uyezds of Saint Petersburg Governorate, with the center in Petergof.

[11] On August 1, 1927, the uyezds were abolished and Oranienbaumsky District, with the administrative center in the town of Oranienbaum, was established.

Between August 1941 and January 1944 the eastern part of the district, including Bolshaya Izhora, served as a territory, known as Oranienbaum Bridgehead, which protected the city of Leningrad form German troops.

[2] During the Soviet period, before 1991, the economy of Bolshaya Izhora was based on military installations, which were since made a joint-stock company and still employs a fraction of population of the settlement.