A. A. Turki Group commonly known as ATCO, (Arabic: مجموعة عبدالرحمن علي التركي) is a very diversified business group based in Dammam in Saudi Arabia, and active since the mid-1950s. It is wholly owned by Abdulrahman Ali Al-Turki.
The group has twenty-three different divisions, joint ventures and standalone companies. Its activities comprise: trading, construction, retail, IT services, tourism, chemicals, construction materials and others.