| Joaks-Link Ltd. | Job Olufemi Akintan | Abeokuta | Nigeria |
| IBB Petroleum Services | Fawzi Algahim | Hazel Park | MI |
| P. D. McLaren Limited | John Allen | Surrey | BC |
| First Petroleum Services, Inc. | Charles Allsopp | Raleigh | NC |
| PumpTex Inc. | Steven Alonzo | | United States |
| Center for Testing & Engineering | Asad Altabchi | Newnan | GA |
| Puma Energy Caribe LLC | Oscar Alvarado | Tegucigalpa | United States |
| ATIO Group | Carlos Alvarez | Mexico City | Mexico |
| Newtoil, S.A. | Javier Alvarez | Madrid | Spain |
| ATIO Group | Juan Jorge Alvarez | Mexico City | Mexico |
| Great Dane Petroleum | Matt Alverson | | United States |
| Shields, Harper & Co., Inc. | Niazi Alzouhbi | Martinez | CA |
| P.S.I. Equipment Sales, Inc. | Alan Amaral | Fresno | CA |
| R.S. Electronic Controls, Inc. | Cathy Anderson | Waterford | WI |
| Georgia DNR - Environmental Protection Division | Meredith Anderson | Atlanta | GA |
| MVI Field Services | Chris Andrews | Brentwood | TN |
| Gypsum Management & Supply | Eric Andrews | Tucker | GA |
| Equipos Y Mantenimiento A Gasolineras S.A. de C.V. | Mario Angeles Martinez | Gustavo A Madero | Mexico |
| USPS | Asif Ansari | Washington | DC |
| Hedma Tecnocontrol SA DE | Josue Anzures Rios | Ejido Nuevo Delicias | Mexico |
