| Abbreviation | Definition |
|---|---|
| LPIC | Linux Professional Institute Certification |
| LSSBB | Lean Six Sigma Black Belt |
| M.ISMI | Member of the International Security Management Institute |
| MACCE | Missouri Advisory Council of Certification for Educators |
| MACP | Manhole Assessment and Certification Program |
| MACP | Manhole Assessment Certification Program |
| MARTC | Michigan Alternate Routes to Certification |
| MCA | Microsoft Certified Architect |
| MCDC | Michigan Certified Development Corporation |
| MCE | Microsoft Certified Educator |
| MCEP | Mine Certification Evaluation Project |
| MCEP | Mining Certification Evaluation Project |
| MCGP | Master Certified Green Professional |
| MCGP | Microsoft Certified Gold Partner |
| MCM | Microsoft Certified Master |
| MCPS | Microsoft Certified Product Specialist |
| MCSD | Microsoft Certified Solution Developers |
| MCSD | Microsoft Certified Solutions Developer |
| MCSD | Microsoft Certified Systems Developer |
| MCSE | Microsoft Certification For System Engineers |