Azo or AZO may refer to:
The Azores (/əˈzɔərz/ ə-ZOHRZ or /ˈeɪzɔərz/ AY-zohrz; Portuguese: Açores, [ɐˈsoɾɨʃ]), officially the Autonomous Region of the Azores (Região Autónoma dos Açores), is one of the two autonomous regions of Portugal, an archipelago composed of nine volcanic islands in the North Atlantic Ocean about 1,360 km (850 mi) west of continental Portugal, about 880 km (550 mi) northwest of Madeira, and about 1,925 km (1,196 mi) southeast of Newfoundland.
Metallurgical Combine Azovstal (Ukrainian: Mеталургійний Kомбінат Азовсталь) (PFTS: AZST) is one of the biggest steel rolling companies in Ukraine.
The Azov Regiment (Ukrainian: Полк Азов) is a National Guard of Ukraine regiment. The unit is based in Mariupol in the Azov Sea coastal region.
Azotobacter is a genus of usually motile, oval or spherical bacteria that form thick-walled cysts and may produce large quantities of capsular slime.
Azores Airlines, previously known as SATA Internacional, is an Azorean airline based in the municipality of Ponta Delgada, on the island of São Miguel in the autonomous archipelago of the Azores.
Azolla (mosquito fern, duckweed fern, fairy moss, water fern) is a genus of seven species of aquatic ferns in the family Salviniaceae.
Azoospermia is the medical condition of a man when sperm count is equal or less than 15 million/ml in his semen.
Azotti (Yuri Denisenko) is a Ukrainian electronic dance music DJ and Sound Producer.
Azomethine ylides are nitrogen-based 1,3-dipoles, consisting of an iminium ion next to a carbanion. They are used in 1,3-dipolar cycloaddition reactions to form 5-membered heterocycles, including pyrrolidines and pyrrolines.