| Acronym | Definition |
|---|
| LOR | Letter Of Reprimand (military) |
| LoR | Lord of the Rings (J.R.R. Tolkien) |
| LOR | Learning Object Repository |
| LOR | Letter of Recommendation |
| LOR | Lindsey Oil Refinery (UK) |
| LOR | Linux.Org.Ru (website) |
| LOR | Left or Right (multiplayer games to coordinate squad movement) |
| LOR | Lock Order Reversal |
| LOR | Letter Of Resignation |
| LOR | Light Output Ratio |
| LOR | Light-O-Rama |
| LOR | Letter Of Request |
| LOR | Line of Response (reconstruction of PET images medical imaging) |
| LOR | Loricrin |
| LoR | Life of Riley (webcomic) |
| LOR | Lines of Resolution (surveillance cameras) |
| LOR | Loss of Resistance |
| LOR | Letter of Reference |
| LOR | Length of Residence (demographics) |
| LOR | Lady of Rage (rap artist) |
| LOR | Level Of Repair |
| LOR | Liverpool Overhead Railway (1893-1956) |
| LOR | Letter of Representation (legal document) |
| LOR | Limit of Reporting |
| LOR | Lunar Orbital Rendezvous |
| LOR | Level of Responsiveness (emergency medicine and first aid) |
| LOR | Life of Ryan (MTV reality show) |
| LOR | Lift-Off Resist (engineering) |
| LOR | Local Orthodox Rabbi |
| LOR | London Oil Reports (petrochemical industry; UK) |
| LOR | Locally-Optimum Rank (detector) |
| LOR | Logical Operator Replacement |
| LOR | Length of Read (genetics) |
| LOR | League of Reason (Internet forum) |
| LOR | Line Outage Recorder |
| LOR | Laing O'Rourke PLC |
| LOR | Lock-Out Relay (electric power) |
| LOR | Limit Order Reconciliation |
| LOR | Loan Origination Record |
| LOR | Loss of Rents (Commercial Property Insurance) |
| LOR | Loral Space and Communications Company (stock symbol) |
| LOR | Letter of Requirements |
| LOR | Late Orders Received (TL 9000) |
| LOR | Level of Reward |
| LOR | Launch and Orbit Rising |
| LOR | Letter of Repair |
| LOR | Limit of Responsibility |
| LOR | LEC Order Request |
| LOR | Low-Frequency Omnidirectional Range |
| LOR | Likely Operational Range |
| LOR | Language Operator Replacement |
| LOR | L'Osservatore Romano (Italian; Vatican newspaper) |
| LOR | List of Requirements |
| LOR | Lepidoptera of Orientalic Region |
| LOR | Loan Officer Registration (Michigan) |