ONB
ONB may refer to:
- Old National Bank, an American regional bank
- One Network Bank, a rural bank in Mindanao, Philippines
- Opera Nazionale Balilla, an Italian Fascist youth organization
- Order of New Brunswick, a Canadian decoration (post-nominal letters)
- Orthonormal basis, a notion in linear algebra
- Österreichische Nationalbibliothek, the national library of Austria
See further:
- OeNB for Oesterreichische Nationalbank
This disambiguation page lists articles associated with the title ONB.
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