IR

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Ir or ir may refer to:

  • the abbreviation (Ir) for the title of Ingénieur (Engineer), a person practicing the profession of engineering
  • Iridium (chemical symbol Ir), the 77th element
  • .ir, the Internet country code top-level domain for Iran

IR may refer to:

Organizations[edit]

Science and medicine[edit]

Finance[edit]

Computing[edit]

Popular culture[edit]

  • I.R. Baboon from the cartoon series I Am Weasel
  • In Rainbows, the seventh studio album by the alternative rock band Radiohead