The Air Force Civil Engineer Center, located at Joint Base San Antonio-Lackland, Texas, is a 1,900-person primary subordinate unit of the Air Force Installation and Mission Support Center, Air Force Materiel Command. The center is responsible for providing responsive, flexible full-spectrum installation engineering services. AFCEC missions include facility investment planning, design and construction, operations support, real property management, energy support, environmental compliance and restoration, and audit assertions, acquisition and program management.

The unit conducts its operations at more than 75 locations worldwide. For more information on AFCEC and the directorates within the organization, see the fact sheet list below. For closed installations, use the search term "former."