The American Council of Engineering Companies (ACEC) is a professional engineering organization, which together with the National Society of Professional Engineers (NSPE) and the American Society of Civil Engineers (ASCE) represent the majority of US engineers and engineering firms.
ACEC’s origins begin in 1909 with the American Institute of Consulting Engineers (AICE). ACEC is not oriented toward granting Professional Engineer (PE) status like the ASCE; it is instead oriented toward the business interests of engineers and represents engineers in a legislative and regulatory forums at the state and federal level. ACEC membership ranges in size from single PE practitioners to the largest US engineering corporations.