Definities van Oosthoek encyclopedie in de Ensie C
- Clarinet
- Clarino
- Clarissa
- Clarisse (Johannes)
- Clarisse (Theodorus Adrianus, de jongere)
- Clarisse (Theodorus Adrianus)
- Clarissen
- Clark (Alvan)
- Clark (Edwin)
- Clark (James)
- Clark (Latimer)
- Clark Russell
- Clark-element
- Clark-metaal
- Clarke (Edward Daniël)
- Clarke (George Sydenham)
- Clarke (Jacob Augustus Lockhart)
- Clarke (James Freeman)
- Clarke (Marcus)
- Clarke (Mary Cowden)
- Clarke (Samuel)
- Clarke (Sir Edward)
- Clarke’s Fork
- Clarkia
- Clarkson (Thomas)
- Clarksville
- Clarone
- Claros
- Clarus
- Class (Gustav)
- Classici
- Classikale zending
- Classis
- Clastidium
- Clauberg (Johann)
- Claude (Jean)
- Claude de France
- Claude Lorrain
- Claudel (Paul)
- Claudia
- Claudia (plantoide)
- Claudia (Quinta)
- Claudia gens
- Claudia Prócula
- Claudianus
- Claudianus (Claudius)
- Claudicatio
- Claudin (Anatole)
- Claudin (Gustave)
- Claudius (Matthias)
- Clauren (Heinrich)
- Claus (Karl Fr. W.)
- Clausel (Bertrand graaf)
- Clausen (Henrik Nikolai)
- Clausen (Sophus)
- Clausen (Thomas)
- Clausewitz (Karl von)
- Clausius (Rudolph Julius Emmanuel)
- Clauson
- Claussslot
- Clausthal
- Clausula
- Clausula cassatoria
- Clausulae Apostolicae
- Clausule
- Clausura
- Clausz Szarvady
- Clauw
- Clavaria
- Claveau
- Clavecembaal
- Claviceps
- Clavicula
- Clavicylinder
- Clavière
- Claviger
- Clavijo
- Clavijo y Fajardo
- Clavis
- Clavius
- Clavus
- Clay
- Clay Cross
- Clayton
- Clayton-Bulwer-tractaat
- Clayton-le-Moors
- Clazomenae
- Cleanthes
- Cleanup
- Clear
- Clearchus
- Clearing
- Clearing house
- Clearinghouse certificates en Clearinghouse loan certificates
- Cleator Moor
- Clebsch
- Cleburne
- Cleckhaeton
- Clédat
- Cleef
