| OBQ | Obsessive Belief Questionnaire
| Others |
| OBQ | Obsessive Beliefs Questionnaire
| Others |
| OBQ | Occupational Balance Questionnaire
| Others |
| OBQ | Office of Business Quality
| Others |
| OBQ | On Board Quantity
| Others |
| OBQ | One Big Question
| Others |
| OBQ | Open Bloody Questions
| Others |
| OBQ | Open Book Questions
| Others |
| OBQ | Optimize Beam Quality
| Others |
| OBQ | Organizational Beliefs Questionnaire
| Others |
| OBQ | Oshkosh Brass Quintet, Oshkosh, Wisconsin
| Others |
| OBQ | Ossa Bene Quiescant
| Others |
| OBQ | Out of Box Quality
| Others |
| OBQ | Overture for Brass Quintet
| Others |