OAB
OAB is the abbreviation for:
- Osservatorio Astronomico di Brera , an observatory
- Osnabrück share brewery
- Overactive bladder , German overactive bladder , a functional urinary bladder disorder
- Opet Aygaz Bulgaria EAD , a petrol station network in Bulgaria, see Hellenic Petroleum
- Organization for academics and civil servants . see Ergo life insurance # 1970: Organization for academics and civil servants (OAB)
- Ordem dos Advogados do Brasil , the Brazilian Bar Association
.oab stands for:
- Outlook offline address book , Microsoft Outlook file format
