LWR is the light water reactor, a reactor used to generate nuclear power.

LWR may also refer to:

Organisations

• Livestock water recycling, a Canadian environmental company
• Lincolnshire Wolds Railway, a heritage railway in Lincolnshire, England
• Lutheran World Relief, an international organization specializing in international development and disaster relief

Other uses

• Locally weighted regression, in statistics
• London Weekend Radio, a former pirate radio station from London, England
• Long Way Round, a British television series documenting a motorcycle journey of Ewan McGregor and Charley Boorman
• Laser warning receiver, a military system used to detect laser emission of weapon guidance systems and laser rangefinders
• learning with rounding, a computational problem, a variant of learning with errors (LWE)

See also

• Longwave (disambiguation), longwave radiation