Asar may refer to:

  • Asr prayer, one of the five daily prayers in Islam
  • Asar, Iran, a village in Iran
  • Asar, Düzce
  • Asar, Ortaköy, a village in Turkey
  • Asar, Yığılca
  • Asar Party, a former Kazakhstani political party
  • Advanced Synthetic Aperture Radar instrument aboard the European Space Agency's Envisat satellite
  • Arc Segment Attitude Reference, an on-boresight attitude reference symbol for a helmet-mounted display<!--OK if 1st link red--> (HMD)
  • A 19th-century transcription of the name Osiris, an Ancient Egyptian deity
  • Electron Archive (ASAR) is a simple extensive archive format, that works like tar
  • Esker, a glacial landform sometimes called an asar
  • Asadha, a month in the Hindu calendar (June–July)
  • Ashadh (Nepali calendar)