The molecular formula C3H2 (molar mass: 38.05 g/mol, exact mass: 38.0157 u) may refer to:
- Cyclopropenylidene, an aromatic carbene
- Cyclopropyne, the cyclic analog of an alkyne
The molecular formula C3H2 (molar mass: 38.05 g/mol, exact mass: 38.0157 u) may refer to: