EIR may refer to:

• Effective interest rate, a banking term

• Entrepreneur In Residence or Executive In Residence, a term in venture capital and business education

• Environmental Information Regulations 2004, a UK Statutory Instrument

• Equipment Identity Register, in a Network Switching Subsystem

• Extended information rate, burstable bandwidth in a Frame Relay network

• Establishment Inspection Report, the result of an investigation by the US FDA.

• Environmental Impact Report, see Environmental impact assessment

• Executive Intelligence Review, the flagship publication of the LaRouche movement

• Kodak Ektachrome Professional Infrared/EIR film, a type of Color Infrared film

• Ethniko Idryma Radiofonias, the National Radio Foundation of Greece

• East Indian Railway Company, introduced railways to eastern and northern India, later known as East Indian Railway (EIR)

• East Indian rosewood, one of the common names for Dalbergia latifolia and its hardwood

Eir may refer to

• Eir, a goddess in Norse mythology

• Eir (telecommunications), a major provider of telecommunications in Ireland

• Eir, a Spivak pronoun

• Eir, a character from the mobile video game Fire Emblem Heroes

• Eir Aoi, Japanese singer

See also

• Eire

• EIRS