ISAR or Isar may refer to:

ISAR

• Intergovernmental Working Group of Experts on International Standards of Accounting and Reporting

• International Search and Rescue Competition

• International Society of Arthroplasty Registries

• Institute for the Study of Academic Racism

• Inverse synthetic aperture radar, a technique to generate two-dimensional radar images of a target

• Intelligible semi-automated reasoning, the formal proof language of the Isabelle proof assistant

Isar

Isar, a German river

• Isar Nuclear Power Plant, on the river

• Isar, Province of Burgos, a municipality located in Castile and León, Spain

• Isar Rural District, Iran

• Isar, Marvinci, North Macedonia, an archaeological site

• Isar Aerospace, a private German launch vehicle company

• Glas Isar, a small car produced by Hans Glas GmbH

See also

• LSAR

• ISARS