Formula C may refer to:

• Formula C (game), an upcoming computer game
• Formula C (karting), a defunct 125 cc karting class
• Formula C (SCCA), the predecessor to the Formula Continental SCCA racing class

• Eucereon balium
• Eucereon birchelli
• Eucereon casca
• Eucereon chalcodon
• Eucereon cimonis
• Eucereon cinctum
• Eucereon clementsi
• Eucereon coenobita
• Eucereon complicatum
• Eucereon confine
• Eucereon confusum
• Eucereon conjunctum
• Eucereon consorta
• Eucereon costaluta
• Eucereon costulata
• Eucereon costulatum
• Eucereon cribrum
• Eucereon cubensis
• Eucereon darantasia
• Eucereon davidi
• Eucereon demonis
• Eucereon discolor
• Eucereon drucei
• Eucereon erythrolepis
• Eucereon erythrolepsis