| L&R | Left and Right 
| Others |
| L&R | Les and Ray
| Others |
| L&R | Lorenz and Rankl
| Others |
| L&R | Love and Respect
| Others |
| L,R | Left, Right
| Others |
| LR | L Restricted
| Others |
| LR | La Roux
| Others |
| LR | Lab Report
| Others |
| LR | Labeled Recall
| Others |
| LR | Labor Relations
| Others |
| LR | Labor Room
| Others |
| LR | Lactated Ringer's solution
| Others |
| LR | Lactated Ringers
| Others |
| LR | Lady Ravyn
| Others |
| LR | Laffont And Rochet
| Others |
| LR | Laffont Rochet
| Others |
| LR | Lame Retard
| Others |
| LR | Lan Realtech
| Others |
| LR | Landing Radar
| Others |
| LR | Landranger Red
| Others |
| LR | Large Range
| Others |
| LR | Large Ring
| Others |
| LR | Largest Real
| Others |
| LR | Largest Remainder
| Others |
| LR | Last Record
| Others |
| LR | Last Red
| Others |
| LR | Last Resort
| Others |
| LR | Last Row
| Others |
| LR | Late Response
| Others |
| LR | lateral rectus (of eye)
| Others |
| LR | Lateral Release
| Others |
| LR | Launch Right
| Others |
| LR | Lawrencium
| Element |
| LR | Lay Report
| Others |
| LR | Ldlr Relative
| Others |
| LR | League Racers
| Others |
| LR | Learning Rate
| Others |
| LR | Lease Rental
| Others |
| LR | Lecture Room
| Others |
| LR | Left Rear
| Others |
| LR | Left Republican
| Others |
| LR | Left Rudder
| Others |
| LR | Lehmer Ramanujan
| Others |
| LR | Leica Reflex
| Others |
| LR | Lending Rate
| Others |
| LR | Level Reader
| Others |
| LR | Lever Release
| Others |
| LR | Lever Rewind
| Others |
| LR | Lewis Rockwell, early pilot
| Others |
| LR | Lexical Representation
| Others |
| LR | Library Reserve
| Others |
| LR | Lietuvos Respublika (Republic of Lithuania)
| Others |
| LR | Light Reflectance
| Others |
| LR | Light Rifle
| Others |
| LR | Lightning Resistance
| Others |
| LR | Lightning Rod
| Others |
| LR | Likelihood Ratio
| Others |
| LR | Likelihood Ratios
| Others |
| LR | Lilien And Rangaswamy
| Others |
| LR | Line Rate
| Others |
| LR | Line Relay
| Others |
| LR | Linear Regression
| Others |
| LR | Linear Relaxation
| Others |
| LR | Link Register
| Others |
| LR | Link Relay
| Others |
| LR | Linkwise Relay
| Others |
| LR | Linkwitz Riley
| Others |
| LR | Liquid Room
| Others |
| LR | Liquidity Ratio
| Others |
| LR | Litter Request
| Others |
| LR | Little River
| Others |
| LR | Little Rock Field Office
| Others |
| LR | Live Recording
| Others |
| LR | Live Rock
| Others |
| LR | Liverpool Rummy
| Others |
| LR | Load Range
| Others |
| LR | Load Relative
| Others |
| LR | Load Reuse
| Others |
| LR | Load To Register
| Others |
| LR | Loan Repayment
| Others |
| LR | Lobbyist Registration
| Others |
| LR | Local Rag
| Others |
| LR | Local Realism
| Others |
| LR | Local Realist
| Others |
| LR | Local Repeater
| Others |
| LR | Locked Rotor
| Others |
| LR | Locker Room
| Others |
| LR | Lode Runner
| Others |
| LR | Loggable And Refreshable
| Others |
| LR | Logical Reasoning
| Others |
| LR | Logistic Regression
| Others |
| LR | Lone Remote
| Others |
| LR | Long Radius
| Others |
| LR | Long Rage
| Others |
| LR | Long Range
| Others |
| LR | Long Reach
| Others |
| LR | Long Rifle
| Others |
| LR | Longer Range
| Others |
| LR | Looker Read
| Others |
| LR | Loomingu Raamatukogu
| Others |
| LR | Looney Ratbag
| Others |
| LR | Lorry Receipt
| Others |
| LR | Loss Rate
| Others |
| LR | Lost Road
| Others |
| LR | Lou Reed
| Others |
| LR | Lou Romano
| Others |
| LR | Low Range
| Others |
| LR | Low Rate
| Others |
| LR | Low Residuals
| Others |
| LR | Low Resistance
| Others |
| LR | Low Rider
| Others |
| LR | Lower Range
| Others |
| LR | Lower Right
| Others |
| LR | Loyal Readers
| Others |
| LR | Lsdb Resynchronization
| Others |
| LR | Luke Reserve
| Others |
| LR | Ringer Lactate
| Others |
| LR | The Ligand Receptor
| Others |