Or

• And (disambiguation)
• Bitwise OR
• Chen Aharoni
• Commonwealth
• Daī-ghî tōng-iōng pīng-im
• Either/Or (disambiguation)
• Elvis operator
• Exclusive or
• Golden Boy (award)
• Journal of the Operational Research Society
• List of M*A*S*H episodes (Season 3)
• Null coalescing operator
• OAR (disambiguation)
• OR Books
• OR gate
• Object–relational mapping
• Odds ratio
• Odia language
• Odisha
• Official Records of the American Civil War
• Official receiver
• Olympic record
• Onion routing
• Operating room
• Operations readiness and assurance
• Operations research
• Or (Crimea)
• Or (My Treasure)
• Or (album)
• Or (digraph)
• Or (heraldry)
• Or (letter)
• Or (logic)
• Or (name)
• Or (political party)
• Or (river)
• Or Records
• Orange Line (Washington Metro)
• Order of Roraima of Guyana
• Ore (disambiguation)
• Oregon
• Organized Rhyme
• Other ranks
• Owasco River Railway
• Province of Oristano
• Rood (unit)
• Sour (album)
• TUI fly Netherlands