C3C3, C-3, C03, C.III or similar may refer to:C2 (disambiguation)C4 (disambiguation)CCC (disambiguation)3C (disambiguation)C30 (disambiguation)Stella Women's Academy, High School Division Class C3C3-GridC3-Benzenesc3 AquariiC3 CentauriC3 SicilianC3-RC-3POAlternative-complement-pathway C3/C5 convertaseSource: Wikipedia — C3 (CC BY-SA 4.0)