AECOM (/eɪ.iːˈkɒm/ US dict: ā·ē·kŏm') (formerly known as AECOM Technology Corporation) is an American multinational engineering firm that provides design, consulting, construction, and management services to a wide range of clients.
AECOM has approximately 95,000 employees, and is number 156 on the 2016 Fortune 500 list. Fortune named AECOM as 2015 World's Most Admired Companies, and Engineering News-Record ranked AECOM as Number 1 Global Design Firm.
The company's official name from 1990 to early January 2015 was AECOM Technology Corporation. Today, it is known simply as AECOM. The company is listed on the New York Stock Exchange (NYSE) under the ticker symbol ACM and on the Frankfurt Stock Exchange under the ticker symbol E6Z.