OSB

OSB may refer to:

• Orlando Solar Bears
• OSB, Amtrak station code for the Old Saybrook station in Connecticut, United States
• Oklahoma School for the Blind
• OneSavings Bank plc, a UK registered bank that operates under the trade name Kent Reliance
• Open Source Business Alliance, sometimes known as OSB Alliance
• Operation Smiling Buddha, code name for India's first successful test explosion of a nuclear bomb (1974)
• Oberstabsbootsmann, the highest non-commissioned officer rank in the German Navy
• Operation Sovereign Borders, Australian border security operation
• Oracle Service Bus, a software communication system made by Oracle Inc.
• Oregon State Bar, public body that regulates the legal profession in Oregon, United States
• Oriented strand board, an engineered wood
• Orquestra Sinfônica Brasileira, the Portuguese name of the Brazilian Symphony Orchestra

Christianity

• Order of Saint Benedict, Catholic monastic order
• Order of St Benedict (Anglican), Anglican monastic order
• Order of Saint Benedict (Orthodox), Orthodox monastic order
• Orthodox Study Bible, Eastern Orthodox Bible in English that includes the Septuagint