The ATO Congresium is an international convention and exhibition center in Ankara, Turkey. It is a property of the Ankara Trade Chamber (ATO) (). It is at on SöÃÂütözü Boulevard at ÃÂankaya district. It opened on 14 September 2012.
Total area of the congresium is , with of the ground floor reserved for various trade exhibitions. On the other floors, are two dividable halls of area; two lounges of area; 10 meeting rooms; an auditorium seating 3,107 people; and a ballroom. It also features dining facilities and two terraces with a view of Ankara.