Other
- Landing Craft Rubber, an inflatable rubber boat used to carry troops
- Lake County Railroad, a railroad company based in Lakeview, Oregon, United States, owned by the Lake County government and operated by the Modoc Northern Railroad
- LCR circuit
- LCR (dice game), a game using dice marked with the letters L, C and R
- LCR meter
- Lead and copper rule, a regulation issued under the U.S. Safe Drinking Water Act
- Least-cost routing, the process of selecting the path of outbound communications traffic based on cost
- Left/Center/Right, a speaker designation type used in surround sound
- Line Concentration Ratio in a remote concentrator
- Liquidity Coverage Ratio, a global minimum liquidity standard that is part of Basel III
- Loughborough Campus Radio
- Low Chip Rate, one of the two transmission modes of UMTS-TDD 3G standard
- Ruger LCR, a revolver made by the Ruger company
- Team LCR, a motorcycle team currently competing in MotoGP
- Level crossing ratio
- Left, Center, Right.
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