noun

• One of numerous places in England:
• A suburb of the Metropolitan Borough of Rochdale, Greater Manchester.
• A large village in Slough borough, Berkshire (OS grid ref TQ0179).
• A village south of Langley Mill, Amber Valley district, Derbyshire (OS grid ref SK4446).
• A village in Fawley parish, New Forest district, Hampshire (OS grid ref SU4401).
• A hamlet and civil parish in North Hertfordshire district, Hertfordshire, England (OS grid ref TL2122).
• A small village in Haydon parish, southern Northumberland, also known as Langley-on-Tyne (OS grid ref NZ8261).
• An unincorporated community in McLean, Fairfax County, Virginia, United States.
• (by metonymy) The Central Intelligence Agency, whose headquarters is located in Langley, Virginia.
• A district municipality and city therein, in southwestern British Columbia, Canada.
• A lunar crater located close to the northwestern limb of the Moon.
• A habitational surname from Old English.
• A unit of heat transmission in the CGS system of units. It is equivalent to 41,840 J/m² in SI units. Symbol: Ly.