| Acronym | Definition |
|---|
| CEIS | Centro de Educación Integral Sistematizada (Spanish; Center for Systematized Integral Education; Guatemala) |
| CEIS | Career Education in Ibm Software |
| CEIS | Center for Environmental Information Science (Japan) |
| CEIS | Center for Environmental Information and Statistics |
| CEIS | Corporate Executive Information System |
| CEIS | Canadian Environmental Industry Strategy |
| CEIS | Certified Expert Intrusion Specialist (Lunarline School of Cybersecurity; various locations) |
| CEIS | Contract End Item Specification |
| CEIS | Certified Early Intervention Specialist |
| CEIS | Combined Elements and Integrated Systems |
| CEIS | Candidate Environmental Impact Statement |
| CEIS | Celestial Navigation Training |
| CEIS | Corporate Employee Information System |
| CEIS | Çimento Endüstrisi Ýþverenleri Sendikasý (Cement Industry Employers' Association; Ankara, Turkey) |
| CEIS | Cost & Economic Information System |
| CEIS | Control Equipage Inventory System (US Navy program) |