Encyclopedias, Almanacs, Transcripts, and Maps
- Claude Goudimel
- Claudio Merulo
- Clausewitz, Carl Von
- Clausewitz, Carl von
- Clay, Joseph
- Cleage, Albert B., Jr.
- Cleaveland, Agnes Morley
- Cleland, William
- Clemenceau, Georges (1841–1929)
- Clemens, Samuel
- Clement I
- Clements Kadalie
- clerk register
- Clerke, Sir Francis Carr
- Cleveland, Benjamin
- Clifford Sifton
- Clifford, Anne
- Clifford, Clark M.
- Clifton-Morenci-Metcalf Strike
- Clinton's Expedition