Arén (Spanish:[aˈɾen]) or Areny de Noguera (Catalan:[əˈɾɛɲ də nuˈɣeɾə], locally:[aˈɾen de noˈɣeɾa]) is a municipality located in the province of Huesca, Aragon, Spain. According to the 2004 census (INE), the municipality has a population of 364 inhabitants.