Alphabetical index
- CAFE (Clean Air for Europe Programme)
- CARDS
- CEDEFOP
- CFCs
- CIS system
- CITES
- Cancer
- Capacities programme
- Capital (movements)
- Charter for small enterprises
- Charter of Fundamental Rights
- Chemical substances (classification, labelling and packaging)
- Child pornography
- Citizens for Europe Programme
- Citizenship of the Union
- Civil protection
- Claims (uncontested)
- Clean Air for Europe Programme (CAFE)
- Climate change
- Cocolaf (Advisory Committee for the Coordination of Fraud Prevention)
- Codex Alimentarius
- Collective redundancies
- Colouring matters for medicinal products
- Committee of european insurance and occupational pensions supervisors (CEIOPS)
- Committee of the Regions
- Committee on Safe Seas
- Common organisation of the agricultural markets
- Common organisation of the market in fishery products
- Common procurement vocabulary (CPV)
- Common standards and procedures for returning illegal immigrants
- Common system of taxation
- Communicable diseases
- Community Charter of fundamental social rights of workers
- Community Customs Code
- Community Fisheries Control Agency
- Community Lisbon Programme
- Community Tobacco Fund
- Community code relating to medicinal products for human use
- Community code relating to veterinary medicinal products
- Community patent
- Community statistics
- Community trade mark
- Company Law
- Compensation to crime victims
- Competitiveness
- Competitiveness and Innovation Framework Programme
- Computer programes (legal protection)
- Concessions under Community law
- Concrete future objectives of education systems
- Conflict prevention
- Construction
- Construction products
- Consumer Consultative Group
- Consumer credit (BG) (CS) (ET) (GA) (LV) (LT) (HU) (MT) (PL) (RO) (SK) (SL)
- Contagious diseases
- Contamination of foodstuffs
- Contracts
- Convention on Choice of Court Agreements
- Convention on parental responsibility and protection of children
- Convergence criteria
- Cooperation (programme)
- Copenhagen process
- Copyright
- Cordless telecommunications
- Corporate Social Responsibility (CSR)
- Corporate accounting
- Corporate and financial malpractise
- Cosmetic products
- Cosmetic products - Animal testing
- Cotonou Agreement
- Cotton
- Council of the European Union
- Counterfeiting
- Court of Auditors of the European Communities
- Credit rating agencies
- Criminal legal assistance
- Cross border payments in Euros
- Cross-border credit transfers (BG) (CS) (ET) (GA) (LV) (LT) (HU) (MT) (PL) (RO) (SK) (SL)
- Culture programme
- Customs
- Customs cooperation