| item | description | category | filter | more on... |
| OPB | Oasis Praise Band | Music |
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| OPB | Office of Planning and Budget | Governmental/US Gov. |
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| OPB | On-chip Peripheral Bus | IT/Hardware |
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| OPB | Open Bay, Papua New Guinea | Regional/Airport Codes |
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| OPB | OPerating Budget | Business/General |
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| OPB | Oregon Progress Board | Other/States-Local |
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| OPB | Oregon Public Broadcasting | Non-Profit Organizations |
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| OPB | Outstanding Principal Balance | Business/Accounting |
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| OPB | Oxidizer Preburner | Governmental/NASA |
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| OPB | Realty Income Corporation Preferred B | Business/General |
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