| LaBonne, Paul | Air Liquide Large Industries U.S., LP |
| LaBonne, Paul | Air Liquide Large Industries U.S., LP |
| Laborde, David | EMCO Technologies |
| Lackey, Ryan | Honeywell |
| Lafitte, Ike | ExxonMobil |
| Lai, David | Bayer MaterialScience, LLC |
| Laird, Michele | DeLane's Ad Specialties |
| Laird, Sue | EPSCO International & Companies, Inc. |
| LaMantia, Chuck | EPSCO International & Companies, Inc. |
| Lamb, Brian | AXYS Industrial Solutions |
| Lambden, Jennifer | OxyChem - Ingleside |
| Lambert, Sally | Alcoa |
| Lamberth, James | Huntsman, LLC |
| Lancelin, Tim | OxyVinyls, LP |
| Lancon, Jerry | Infinity Construction Services, LP |
| Landon, Scott | Kuraray America Inc. |
| Landry, Darrell | MB Industries |
| Landry, Sean | Kaneka Texas Corporation |
| Landry, Simon | Team Industrial Services, Inc. |
| Lane, Adrienne | Conestoga-Rovers & Associates |
| Lanier, Doug | The Mundy Companies |
| Lannom, Joe | The Mundy Companies |
| Lara, Bob | Ethyl Corporation |
| Larcade, Chris | Honeywell |
| Larocca, Chance | Superior Supply & Steel |