Clark Engineers has worked with local, national and international clients. Below is a partial list of some of these clients.

Baker Hughes CU Mantex
Bay Products Merichem
Biorem Motiva Shell
Commercial Air O'Brien & Geere Engineers
Construction Services Owens Corning
Containment Solutions Inc. Plascore
Continental Leisure Design Poligon Systems
C & C Metals Pro Plus Inc.
Dairy Queen (RCDQ) Shell Oil
Enduro Composite Systems Siemens
Epcom, Inc. Stewart & Stevenson
Excel Tec Tenaris
ExxonMobil Tetra Technologies
Fina Tisdale
FRP Manufacturing Unistrut, Teconic
FRP Tank and Pipe Institute Vogt Engineering
Hoffland Environment West Wind Composites
Houston Industrial Fabricators Woodlands Parks & Recreation