Irena may refer to:
People
- Irena (name)
Places
- Irena, Missouri, a village in the United States
- Irena, Subcarpathian Voivodeship, a village in south-east Poland
- Irena, Lublin Voivodeship, a town in eastern Poland, merged into nearby Dęblin in 1953
Other uses
- HD 146389 (also known as WASP-38 or Irena), a star with a yellow-white hue in the northern constellation of Hercules
- International Renewable Energy Agency, an intergovernmental organisation mandated to promote adoption and use of renewable energy
- Irena (bird), a genus of passerine birds
- IRENA, the Nicaraguan Institute of Natural Resources and the Environment, now the Ministry of the Environment and Natural Resources
See also
- Irene (disambiguation)