- Capital
- Capitalism
- Capital market
- Cartel
- Central bank
- Christian socialism
- Classical economics
- Coase theorem
- Collusion
- Command economy
- Commercial bank
- Commodity
- Common market
- Common stock
- Complementary goods
- Complementary inputs
- Consumer price index
- Consumer surplus
- Consumers
- Consumption tax
- Cost
- Cross-elasticity of demand