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 in California, United States, and the county seat of Kern County. It covers about 142 square miles (370 km2) near the southern end of the San Joaquin Valley and the Central Valley region.
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 Baku–Tbilisi–Ceyhan (BTC) pipeline is a 1,768 kilometres (1,099 mi) long crude oil pipeline from the Azeri-Chirag-Guneshli oil field in the Caspian Sea to the Mediterranean Sea.
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.
Bakhdida (Syriac: ܒܲܓܼܕܹܝܕܵܐ, Arabic:بخديدا) IPA: [bɑχdɛːdə], also known as Baghdeda, Qaraqosh, or Al-Hamdaniya, is an Assyrian city in northern Iraq within the Nineveh Governorate, located about 32 km (20 mi) southeast of the city of Mosul and 60 km west of Erbil amid agricultural lands, close to the ruins of the ancient Assyrian cities Nimrud and Nineveh.