The Chief Justice of Nigeria or CJN is the head of the judicial arm of the government of Nigeria, and presides over the country's Supreme Court and the National Judicial Council. The current Chief Justice is Olukayode Ariwoola who was appointed on 27 June 2022. He was appointed Acting Chief Justice of the Federation upon the resignation of incumbent Chief Justice Tanko Muhammad, he was confirmed Chief Justice by the Nigerian Senate on 21 September 2022.
The CJN is the apex figure in Nigeria's judicial hierarchy, commanding the Supreme Court and the National Judicial Council. Following his appointment on June 27, 2022, Olukayode Ariwoola assumes this role, succeeding Chief Justice Tanko Muhammad upon his resignation.