Abo or ABO may refer to:

Entertainment

• Ābo, the Japanese name of Ekans, a fictional species in the Pokémon franchise

• Omegaverse, a genre of fiction also known as A/B/O

Languages

• Abõ or Abon, a Cameroonian language (ISO 639-3: abo)

• Bankon language or Abo, a Cameroonian language

Math and science

ABO blood group system, a human blood type and blood group system

• ABO (gene), in humans which encodes the ABO blood group system transferase enzyme

• Adaptive Binary Optimization, an image compression algorithm

Organizations

• American Board of Ophthalmology, a professional organization for ophthalmologists

• American Board of Opticianry, a professional organization for opticians

• American Board of Orthodontics, a professional organization for orthodontists

• Antikythira Bird Observatory in Greece

People

• Abo (name), an Arabic or Hebrew male name

• Abo of Tiflis (–786), an Arab East Orthodox Catholic saint

• Abo, a (usually derogatory) term for Aboriginal Australians

Places

• Abo (historic place), an archaeological site in New Mexico, US

• Åbo, the Swedish name for Turku, a city in Finland

• Abo, Missouri, an unincorporated community

• Abo, New Mexico, an unincorporated community in the US

• Abo Canyon, also called Abo Pass, a mountain pass in central New Mexico

• Aboh, also known as Abo or Ibo, a town in Nigeria's Delta State

• Aboisso Airport in Comoé District, Ivory Coast (IATA airport code ABO)

• Antonio (Nery) Juarbe Pol Airport in Arecibo, Puerto Rico (FAA airport code ABO)

See also

• Treaty of Åbo

• Abbo (disambiguation)

• Abo Call, the first Aboriginal-focused magazine in Australia, published 1938