OBA

Oba or OBA may refer to:

Science, technology, business, management

 * Office Business Applications, software which uses applications within the Microsoft Office system
 * On base average, a baseball statistic
 * Online Behavioral Advertising, a range of technologies and techniques used by online website publishers and advertisers
 * Optical Brightening Agent, a type of dye used in fabric and paper
 * Output-based aid, a type of aid to support the delivery of public services in developing countries
 * Out-of-band agreement, in communications
 * Oxygen Breathing Apparatus, an oxygen supply system used by the US Navy for firefighting

Organisations and institutions

 * 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.
 * One Bermuda Alliance, a Bermuda political party
 * Only Boys Aloud, Welsh male voice choir
 * Ontario Bar Association
 * Openbare Bibliotheek Amsterdam, the public library of Amsterdam
 * Ormiston Bolingbroke Academy, a school in Runcorn, England

People

 * Oba (king), a Bini and Yoruba title for certain royal rulers
 * Ōba, a Japanese surname
 * Oba Chandler (1946–2011), an American murderer executed in 2011

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
 * Oba Market, Historical market at Ring Road in Edo State, Nigeria

Other

 * Oba: The Last Samurai, a 2011 Japanese film
 * Oba (orisha), a spirit who is prominent in various Traditional African religions and Afro-American religions