Name
- Cavendish, William George Spencer, 6th Duke of Devonshire, Whig politician, 1790-18581
- Cayley, Edward Stillingfleet, Liberal MP, 1802-18621
- Cetto, Anton, Freiherr von Cetto, Bavarian statesman, 1756-18471
- Chadwick, Edwin, Knight, social reformer and civil servant, 1800-18901
- Chance, James Timmins, manufacturer and engineer, 1814-19021
- Chesson, Frederick William, campaigner for the rights of indigenous peoples, 1833-18881
- Chester and Holyhead Railway, 1844-18591
- Children, John George, scientist, librarian at the British Museum, 1777-18521
- Chippenham Horticultural and Floral Society, c 18401
- Chippenham Union, fl 18351
- Christian Theodor Groos, publishers, Karlsruhe, fl 1836-18381
- Christie, Samuel Hunter, mathematician and Secretary of the Royal Society, 1784-18651
- Christy, William, junior, seed collector, fl 18381
- Clark, George Thomas, engineer and antiquary, 1809-18981
- Clements, Nathaniel, 2nd Earl of Leitrim, politician, 1768-18541
- Clouzard & Soulier, photographers, Paris, fl 1858-18601
- Coach Company, Bath, fl 18401
- Cochrane, John, printer and bookseller, Melksham, fl 18561
- Coddington, Henry, clergyman, natural philosopher, and Fellow of Trinity College Cambridge, 1798-18451
- Coghill, John Joscelyn, 4th Baronet, photographer and writer of operas, 1826-19051