OSB

OSB may refer to:

• Oberstabsbootsmann, German Navy rank
• Old Saybrook station in Connecticut, USA (Amtrak station code)
• OneSavings Bank plc, a UK registered bank, trade name Kent Reliance
• Operation Sovereign Borders, Australian border security operation
• Operation Smiling Buddha, India's first successful nuclear bomb test (1974)
• Oracle Service Bus, a software communication system
• Oriented strand board, an engineered wood