Cer
- CER Computer
- Canonical Encoding Rules
- Cer (mountain)
- Cer, Kičevo
- Certified emission reduction
- Cherbourg – Maupertus Airport
- Chinese Eastern Railway
- Classic Endurance Racing
- Closer Economic Relations
- Commission for Energy Regulation
- Community of European Railway and Infrastructure Companies
- Comparative Education Review
- Comparative effectiveness research
- Conditioned emotional response
- Conference of European Rabbis
- Control event rate
- Crossover error rate
- Currency exchange rate
- Customer edge router
- Keres
- Zvornik