Bak or BAK may refer to:
Baku (Azerbaijani: Bakı, IPA: [bɑˈcɯ]) is the capital and largest city of Azerbaijan, as well as the largest city on the Caspian Sea and of the Caucasus region.
Bakersfield is a city located in Kern County in the US state of California. The city sits in the San Joaquin Valley.
Bakugan Battle Brawlers (爆丸バトルブローラーズ, Bakugan Batoru Burōrāzu) is a Japanese-Canadian action adventure television series produced by TMS Entertainment, Dentsu Inc., and Nelvana Animation under the direction of Mitsuo Hashimoto.
Baker Hughes is an American industrial service company, it is one of the world's largest oil field services companies.
Bakumatsu (幕末, bakumatsu, "closing curtain" of the late Tokugawa shogunate) refers to the final years of the Edo period when the Tokugawa shogunate ended.
The Bakerloo line /ˌbeɪkərˈluː/ is a line of the London Underground, coloured brown on the Tube map. It runs partly on the surface and partly at deep level, from Elephant and Castle in Central London, via the West End, to Harrow & Wealdstone in the north-western outer suburbs.
The Bakken Formation /ˈbɑːkən/ is a rock unit from the Late Devonian to Early Mississippian age occupying about 200,000 square miles (520,000 km2) of the subsurface of the Williston Basin, underlying parts of Montana, North Dakota, Saskatchewan and Manitoba.
Baklava (/ˈbɑːkləvɑː/, /bɑːkləˈvɑː/, or /bəˈklɑːvə/; [bɑːklɑvɑː]) is a rich, sweet pastry made of layers of filo filled with chopped nuts and sweetened and held together with syrup or honey.
Bakelite (/ˈbeɪkəlaɪt/ BAY-kə-lyt, sometimes spelled Baekelite), or polyoxybenzylmethylenglycolanhydride, is an early plastic.