- St. Petersburg, St.-Petersburg, St Petersburg, St-Petersburg, Saint-Petersburg
- St. Petersburgh (obsolete)
English translation of Russian Санкт-Петербу́рг (Sankt-Peterbúrg), from German Sankt Petersburg (“Saint Peter's City”), referring to Saint Peter the Apostle and alluding to its founder Tsar Peter the Great. Doublet of Peterborough.
- A federal city of Russia, known between 1914 and 1924 as Petrograd and between 1924 and 1991 as Leningrad, and former capital of Russia (1713–1728, 1732–1918).
- Alternative form of
- An unincorporated community in Logan County, Colorado, United States.
(Leningrad, Petrograd; a former capital of Russia, a city on the Baltic Sea):
- Leningrad (historical name of the city, still the name of the surrounding oblast)
- Venice of the North, Northern Palmyra (nickname)
- Petersburg (informal)
- Petrograd (historical name of the city, name of a region in the city)
- Piter (colloquial)
- Sankt-Peterburg (transliteration)