| Acronym | Definition |
|---|
| MCCS | Marine Corps Community Services |
| MCCS | Monitor Control Command Set |
| MCCS | Manomet Center for Conservation Sciences (Manomet, MA) |
| MCCS | Mount Cheam Christian School (Canada) |
| MCCS | Managed Central Computing Systems (Netherlands) |
| MCCS | Marine Corps Common Skills (USMC) |
| MCCS | Mechanized Calling Card Service |
| MCCS | Mission-Critical Computer System |
| MCCS | Macy's Credit and Customer Services |
| MCCS | Machinery Centralized Control System |
| MCCS | Mennonite Central Committee Saskatchewan |
| MCCS | Microclimate Cooling System |
| MCCS | Mission Controls and Communications System |
| MCCS | Merchants Choice Card Service |
| MCCS | Martinez Consulting and Computer Services, Inc. |
| MCCS | Mechanical Card Coding System |
| MCCS | Multiple-Code Coded Switch |
| MCCS | Management Cost and Control System |
| MCCS | Multi-State Consecutively-Connected System |
| MCCS | Mobile Command & Control System |
| MCCS | Metropolitan Catering and Cleaning Services (Wigan MBC; UK) |
| MCCS | Moto Country Club Serviannais (French motorcycle country club) |