PEN
# PEN

PEN may refer to:

* Partido Ecológico Nacional (National Ecological Party), former name of the Brazilian political party Patriota (PATRI)
* PEN International, a worldwide association of writers
   * English PEN, the founding centre of PEN International
   * PEN America, located in New York City
   * PEN Center USA, part of PEN America
   * PEN Canada, Toronto
   * PEN Hong Kong
* PEN-International, Postsecondary Education Network International, an international partnership of colleges for those with hearing impairment
* Penang International Airport, Malaysia, IATA airport code: PEN
* Penarth railway station, Wales, station code: PEN
* Peruvian sol, ISO 4217 currency code PEN
* Poder Ejecutivo Nacional, the system of national executive power embodied in the President of Argentina
* Polyethylene naphthalate, a polyester
* Private Enterprise Number, an organisation identifier
* Protective earth neutral in electrical earthing systems
