Name
- Carstairs, Andrew, Commissioner for St Andrews1
- Cavendish, William, 3rd Duke of Devonshire, Lord Lieutenant of Ireland1
- Cavendish, William, Lord Cavendish, afterwards 4th Earl and 1st Duke of Devonshire1
- Cecil, James, 3rd Earl of Salisbury1
- Clement IX, Pope1
- Clerke, John, Colonel, Army and Navy Commissioner1
- Clounes, Alexander, Commissioner for Cromartie1
- Cochrane, William1
- Colquhoun, John, of Luss, Commissioner for county Dumbarton1
- Colvius, André, Dutch Protestant Divine1
- Commonwealth, England1
- Coper, John1
- Corraro, Antonio1
- Covel, John, traveller, botanist and college head, 1638-17221
- Craigie, Hew, of Gairsey, Commissioner for county Orkney1
- Crichton, James, 2nd Viscount Frendraught1
- Crichton, James, of St. Leonard's, Commissioner for county Dumfriesshire1
- Crichton, William, 2nd Earl of Dumfries, Sheriff of Ayr1
- Cros, Simon, diplomat, fl 1678-16821
- Cunningham, Thomas1