- Cilla, Ostfr
- Cilla II, OL (of: Harald)
- Cinema, AA
- Cinico, Holst (of: Capitol I – Silbersee, ex Hozeville – Coriolan)
- Circe
- Cita, Holst (of: Ladykiller)
- Citrus
- Clarissa, Holst (of: Landgraf I – Calypso I – Rigoletto)
- Clementine (of: Ulft – Garant)
- Cleopatra, KWPN
- Cliandera Fromecs, SF (of: Fromecs Liandero – Quidam de Revel – Capitol I)
- Clinton, Holst (of: Corrado I – Masetto – Landgraf I)
- Codex, Holst
- Colombo, Holst (of: Cottage Son)
- Colonel, Holst (of: Cottage Son)
- Colt, Holst (of: Cromwell – Anblick)
- Constellation, SF
- Consul, Holst (of: Cottage Son)
- Contec-Carolan, Holst (of: Carolus I – Landgraf I – Farnese)
- Contenance, OL (of: Donnerhall – Feldherr – Grundyman)
