Compartment syndromes associated with arthroscopy have been rarely reported. Compartment syndrome after knee arthroscopy has been reported in some case reports, whereas we could find only one case report of acute compartment syndrome following ankle arthroscopy after Maisonneuve fracture. However, there has been no previous report of a case of acute compartment syndrome after ankle arthroscopy in an atraumatic patient. In this article, we present a case of acute compartment syndrome during ankle arthroscopic procedures in an atraumatic patient.