Wikipedia
BDO
- BDO International, the world's fifth-largest accountancy network
- BDO Kendalls, Australia
- Banco de Oro, one of the largest banks in the Philippines
- Barton, Durstine & Osborn, the former name of advertising agency BBDO
- Behavior Detection Officer
- Big Day Out, an annual music festival held in Australia and New Zealand
- Big Dumb Object, a term used in science fiction
- Block Development Officer, the official in charge of an administrative division (Block) of some South Asian countries
- British Darts Organisation, one of the organisations which runs world professional darts championships
- Business Depot Ogden, the former Defense Depot Ogden Utah converted into a business park
- Husein Sastranegara International Airport, the IATA code served in Bandung, Indonesia
- Butanediol, especially 1,4-Butanediol, an organic chemical compound