Meydanak or Maidanak (, ) may refer to:
Meydanak, Alborz Meydanak, Fars Meydanak-e Bozorg, Isfahan Province Meydanak-e Kuchak, Isfahan Province Meydanak, Lorestan Meydanak, Markazi Meydanak, Mazandaran Maidanak, Uzbekistan Maidanak Observatory, Uzbekistan Maidanak space tracking centre, Uzbekistan
See also Majdanek, Nazi concentration camp