Isábena

Isábena or Isàvena (, ) is a municipality located in the province of Huesca, Aragon, Spain. According to the 2004 census (INE), the municipality has a population of 278 inhabitants.

The Isábena is the principal tributary of the river Ésera, itself a tributary of the Cinca, which flows into the Ebro and thence to the Mediterranean Sea. Its head is 2,400 metres above sea level at a place called Es Sebollés, between the peaks Gallinero and Cibollés in the Pyrenees of High Aragon. Its valley lies primarily in the comarca of Ribagorza.