OBA

Oba or OBA may refer to:

Oba (king), a Bini and Yoruba title for certain royal rulers
Oba (orisha), a spirit who is prominent in various Traditional African religions and Afro-American religions
Ōba, a Japanese surname
Oba: The Last Samurai, a 2011 Japanese film
Oba Chandler (1946–2011), an American murderer executed in 2011

Office Business Applications, software which uses applications within the Microsoft Office system
Oklahoma Bible Academy, a Christian secondary institution in Enid, Oklahoma, U.S.
Oklahoma Bankers Association, a trade association in Oklahoma, U.S.
Oklahoma Bar Association, the state bar (legal association) of Oklahoma, U.S.
On base average, a baseball statistic
One Bermuda Alliance, a Bermuda political party
Only Boys Aloud, Welsh male voice choir
Openbare Bibliotheek Amsterdam, the public library of Amsterdam
Optical Brightening Agent, a type of dye used in fabric and paper
Out-of-band agreement, in communications
Output-based aid, a type of aid to support the delivery of public services in developing countries
Oxygen Breathing Apparatus, an oxygen supply system used by the US Navy for firefighting
Online Behavioral Advertising, a range of technologies and techniques used by online website publishers and advertisers

Places

Oba, Ontario a remote hamlet in Ontario, Canada
Oba Island, in Vanuatu
Oba-Igbomina, a town in Nigeria
Oba, Anambra, a town in Anambra State, Nigeria
Oba River, a river in Nigeria
Orange Beach, Alabama
Oba, Indonesia - that part of the administered area of the town of Tidore lying on Halmahera Island