| Name | Company | Active Certifications |
| John Sabater |  |
MEF-SDCP |
| G-Jay T. Salas |  |
MEF-CECP |
| Rick Salazar |  |
MEF-SDCP |
| Lizette Salcedo | |
MEF-SNCP |
| Juan Enrique Salcedo Martinez | Flo Networks | MEF-CECP |
| Alfred Allen R. Sales | |
MEF-CECP, MEF-SNCP  |
| Kevin Salyer | |
MEF-CECP |
| Anthony Salza | Other | MEF-SDCP |
| Larry Samberg | --- | MEF-CECP |
| Aurea Lourdes San Diego | |
MEF-SNCP, MEF-CECP |
| Mariano Sanchez | Kratos Defense | MEF-CECP |
| Sheldon Sanders |  |
MEF-CECP |
| Sanjay Sanjay |  |
MEF-SDCP |
| Niroop Sanjeev Kumar | Arelion | MEF-CECP |
| Ivory Santos | |
MEF-CECP |
| Jeremy James Santos |  |
MEF-CECP |
| Bernard Allan Santos | |
MEF-CECP |
| Karlo Santos | |
MEF-SNCP |
| Brad Sarver |  |
MEF-CECP |
| Armand Sayeed | |
MEF-SDCP |
| Mitch Sayers | |
MEF-CECP |
| Klaus Scheepers |  |
MEF-SDCP |
| Sam Schmidt | SHI International Corp | MEF-SDCP |
| Michael Schmitz |  |
MEF-SDCP |
| Brandan Schmitz | Dakota Central Telecom | MEF-CECP |
| Heinz-Theodor Schönen | |
MEF-SDCP |
| Pete Schueppert |  |
MEF-CECP |
| Stephanie Schuster |  |
MEF-CECP |
| Gerard Schützler | |
MEF-SDCP |
| Alexander Schweickerdt |  |
MEF-CECP |
| Robert Scoberg | Oreta | MEF-SDCP |
| Robert Scoggins |  |
MEF-CECP |
| Ahmed Sebaie | |
MEF-SNCP |
| Prakash Sengar | |
MEF-SDCP |
| Wayne Settle | |
MEF-CECP |
| Rony Shabo | |
MEF-CECP |
| Sunny Sharma | HCL Technologies Ltd | MEF-SDCP |
| Mohamed Shehata |  |
MEF-CECP |
| Qiang Shi | Eccom | MEF-SDCP |
| Kostadin Shofelinov | EXA Infrastructure | MEF-CECP |
| Gurpreet Singh | |
MEF-SDCP |
| Seema Sista | |
MEF-CECP |
| John Siwko |  |
MEF-CECP, MEF-SDCP |
| Paul Skolmoski | |
MEF-SDCP |
| Brad Smetanko | |
MEF-CECP |
| Steven Smith | |
MEF-CECP |
| Shaun Smith | |
MEF-SDCP |
| William Smith | RTC Communications | MEF-CECP |
| Clayton Snyder | |
MEF-SDCP |
| Michael Solis | |
MEF-SDCP |
| Jody Sommer |  |
MEF-CECP |
| Adrian R. Son | |
MEF-SNCP |
| Arjie A. Songcayauon | |
MEF-CECP |
| Edison P. Soriano | |
MEF-CECP |
| Jeanen Sotto | |
MEF-SNCP, MEF-CECP |
| Joe St. Germain | |
MEF-SDCP |
| Debra Stanley | |
MEF-CECP |
| Clinton Starbuck | |
MEF-CECP |
| John Stevens | |
MEF-CECP |
| Steven Stiewe | |
MEF-SDCP |
| Terry Stober | Aureon | MEF-CECP |
| Gergana Stoyanova | EXA Infrastructure | MEF-CECP |
| George Strauch | |
MEF-SDCP |
| Matthew Stringer | |
MEF-SDCP |
| J Sumner | |
MEF-SNCP |
| Danny Supnet | |
MEF-CECP, MEF-SNCP |
| Michael Surla | |
MEF-CECP, MEF-SNCP |
| Stephen Sutton | |
MEF-SDCP |
| Jim Swenson | |
MEF-CECP |
| Marjory Sy |  |
MEF-CECP, MEF-SNCP, MEF-SDCP |