LER

LER or Ler may refer to:

People

 * Larry LaLonde, nicknamed "Ler", guitarist of the rock band Primus
 * Anthony Ler, Singaporean notorious murderer

Places and infrastructure

 * Ler, Norway, a village in the municipality of Melhus in Trøndelag county, Norway
 * Ler, South Sudan, a village in the north central part of South Sudan
 * Leytonstone High Road railway station, a station in London, England
 * Leinster Airport, IATA airport code "LER"
 * London Electric Railway, later part of the London Underground

Science and technology

 * Label edge router, a term used to define an edge-most router in an IP/MPLS network
 * Light-emitting resistor, the working principle of an incandescent light bulb
 * Liquid epoxy resin, a precursor to coatings and flooring material
 * Locus of enterocyte effacement-encoded regulator, a regulatory protein in pathogenic bacteria
 * Luminous efficacy of radiation, for light sources, the ratio of luminous flux to power
 * Lunar Electric Rover, a vehicle designed by NASA for extra-vehicular activity on the lunar surface.
 * Land equivalent ratio, in multicropping or intercropping agriculture, the relative land area needed for the same yield under equivalent disjoint monocultures

Other

 * "Ler" books, a trilogy by M. A. Foster
 * Loss Exchange Ratio, a military calculation of comparative casualties of war
 * The Loyal Edmonton Regiment, an infantry unit of the Army Reserve Canadian Forces
 * Elite One Championship (French: Ligue Élite de Rugby), a French rugby league
 * Ler (mythology), a sea god in Irish mythology also known as Lir