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