The Full Form of ACI is American Concrete Institute.

The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development, distribution and adoption of consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.

Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, with a regional office in Dubai, UAE, and a Resource Center in Southern California, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational & training programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete. ACI has more than 100 chapters, 243 student chapters, and 30,000 members spanning over 120 countries.