| Abbreviation | Definition |
|---|---|
| CIGR | Commission Internationale du Gnie Rural |
| CIGR | International Commission of Agricultural Engineering |
| CIHS | Captiva Island Historical Society |
| CIHS | Central Illinois Hosta Society |
| CIIST | Conseil International pour l'Information scientifique et technique |
| CIIST | International Council for Scientific and Technical Information |
| CIM | Canadian Institute of Mining, Metallurgy and Petroleum |
| CIM | Institut Canadien des Mines, de la Métallurgie et du Pétrole |
| CIM | Institut Canadien des Mines, de la Mtallurgie et du Ptrole |
| CIMarE | Canadian Institute of Marine Engineering |
| CIMarE | Institut Canadien de Génie Maritime |
| CIMarE | Institut Canadien de Gnie Maritime |
| CIME | Colegio de Ingenieros Mecánicos y Electricistas |
| CIME | Colegio de Ingenieros Mecnicos y Electricistas |
| CIME | College of Mechanical and Electrical Engineers |
| CIMS | Conveying Islamic Message Society |
| CIMS | Course in Miracles Society |
| CINDE | Canadian Institute for NDE |
| CINDE | Canadian Institute for Nondestructive Evaluation |
| CINP | Collegium Internationale Neuro-Psychopharmacologicum |