C series
- Bombardier C-Series
- C (disambiguation)
- C Series Index
- C class (disambiguation)
- C-size (disambiguation)
- Chevrolet C/K
- Chevrolet Series C Classic Six
- Class C (disambiguation)
- Compaq C series
- Convex Computer
- Daihatsu C-series engine
- Dodge C series
- Ford C series
- ISO 216
- International C series
- Isuzu C/E series
- Opel Rekord Series C
- QI (C series)
- Series C
- Series C banknotes
- Sony Ericsson C series
- Sony Vaio C series
- TNCA Series C
- Toshiba Satellite C series
- Transperth C-series train