Name
- Carondelet, Francisco Luis Hector, Baron1
- Catala, Francisco1
- Ceballos, Pedro, Don; Viceroy of the Rio de La Plata1
- Ciezar1
- Clavero, Gregorio1
- Clemente y Miro, Francisco, Don1
- Cobo, Martin1
- Concha, Juan Antonio, naval officer, army officer and colonial governor, 1760-18101
- Concordia, Marques de la, Viceroy of Peru1
- Cordova y Figueroa, Pedro, Don; Sargento Mayor1
- Corita, Alonso, Dr; of Mexico1
- Cortes, Jose, Don1
- Couto, Jose Vieira1
- Cruce, Paulus a1
- Cruz, Luis de la, Don1
- Dios Gonzalez, Juan, military engineer, explorer and cartographer, fl 1742-17831
- Dixon, George, naval officer and explorer, 1748-17951
- Doumet, Zacharie Felix, mapmaker, fl 17771
- Echeandia, Andres, Fr1
- Enriquez, Andres, sailor, fl 16151