| Caballero, Maricela | Chevron Phillips Chemical Co. LP |
| Cagen, Stuart | Shell Oil Company |
| Cagle, Molly | Vinson & Elkins LLP |
| Cagle, Robert | Repcon, Inc. |
| Cagney, Chris | GHX Industrial, LLC |
| Cahill, Laurel | Alcoa World Alumina Atlantic |
| Cain, Terry | DuPont |
| Caldwell, Mark | The Mundy Companies |
| Calhoun, Akilah | Celanese |
| Calhoun, Elton | Regional Steel Products, Inc. |
| Callan, James | Shell Chemical LP |
| Camacho, Ben | Brown and Caldwell |
| Cameron, John | Turner Industries Group, LLC |
| Cameron, Kathleen | GB Biosciences Corporation |
| Camp, Shanna | F.I.R.S.T. |
| Camp, Timothy | INEOS Olefins & Polymers USA |
| Campbell, Christie | Cray Valley US |
| Campos, Gustavo | BASF Corporation - Freeport Facility |
| Cannon, Kimberly | LyondellBasell Industries |
| Cannon, Russell | The Infinity Group |
| Cannon, Steve | Sprint Waste |
| Cannon, Thure | Texas Pipeline Association |
| Cantu, Adam | ExxonMobil Chemical Company |
| Cantu, Aurora | Repcon, Inc. |
| Cantu, Craig | Seal Tech Inc. |