The audit of joint-stock corporations is one of the far-reaching amendments introduced by the new Turkish Commercial Code No. 6102. According to the repealed Commercial Code No. 6762, the Auditor functioned as an organ of joint-stock companies. New Turkish Commercial Code No. 6102 revokes the role of the Auditor as an Organ in joint-stock companies and mandates an independent and external audit for joint-stock corporations.This article begins with a general explanation of auditing. Afterwards, the term Auditor and the prerequisites for being an Auditor are examined. In the continuation of our work, the Turkish Commercial Code provisions pertaining to the appointment, resignation, and dismissal of the auditor, as well as the auditor’s contract, are analyzed.