- Cable
- Camarilla Pivot Points
- Cambist
- Cambodian Riels
- Canadian Dollar
- Cape Verde Escudos
- Carbon Credits
- Carry Trade
- Cash Market
- Catalyst
- Cayman Islands Dollars
- Cboe EuroCurrency Volatility Index (EVZ)
- Central Bank
- Central Bank Digital Currency (CBDC)
- Central Bank Intervention
- Central Counterparty Clearing House (CCP)
- Central Limit Order Book (CLOB)
- Chaikin Oscillator
- Chart Pattern
- Chartist
- Chicago PMI
- Chile Peso (CLP)
- Chinese Renminbi
- Chinese Yuan (CNY)
- Christine Lagarde
- Circulating Supply
- Cleared Funds
- Clearing
- Clearing Price
- Client
- Closed Position
- Cloud Mining
- Coin Age
- Cold Storage
- Collateral
- Colombian Pesos
- Comdoll
- Commercial Corporations
- Commission
- Commitments of Traders Report (COT)
- Commodity
- Commodity Channel Index (CCI)
- Commodity Futures Trading Commission (CFTC)
- Commodity Research Bureau Index
- Commodity Trading Advisor (CTA)
- Communaute Financiere Africaine Francs
- Comoros Francs
- Completeness
- Comptoirs Francais Du Pacifique Francs
- Conference Board Consumer Confidence Index (CCI)