| c.g.s. unit | CGS adalah salah satu sistem pengukuran fisika yang kemudian digantikan oleh sistem MKS, dan selanjutnya digantikan lagi oleh SI. |
| cacat | |
| Cacat Frenkel | |
| cacat kristal | |
| Cacat Kristal | |
| Cacat Schottky | |
| cahaya bulan | |
| cair | |
| Cairan Newtonian | |
| cairan supernatan | |
| cakrawala | |
| cakrawala acara | |
| californium | |
| camcorder | |
| campuran | |
| campuran | |
| campuran beku | |
| campuran distektik | |
| campuran eutektik | |
| campuran mendidih konstan | |
| campuran nitrasi | |
| campuran rasemat | |
| campuran seng | |
| campuran stoikiometri | |
| candela | |
| candu | |
| candu | |
| CANGKUL | |
| Carnot, Nicolas Léonard Sadi (1796–1832) | |
| cascade liquefier | |
| Cavendish, Henry (1731–1810) | |
| CD | |
| CD ROM | |
| CD-RW | |
| cekung ganda | |
| cembung | |
| Cerenkov, Pavel Alekseyevich (1904–90) | |
| CERN | |
| Chadwick, Sir James (1891–1974) | |
| charge | |
| Charles, Jacques Alexandre César (1746–1823) | |
| chemiluminescence | |
| chemisorpsi | |
| chip | |
| cincin | |
| cincin jangkar | |
| cincin tienil | |
| Clausius, Rudolf Julius Emmanuel (1822–88) | |
| CMR | |
| CNB | |
| COBE | |
| Cockcroft, Sir John Douglas (1897–1967) | |
| coelostat | |
| cologarithm | |
| colorimeter | |
| condong | |
| Constantan | |
| Cooper, Leon | |
| Copernicus, Nicolaus (1473–1543) | |
| coulomb | |
| Coulomb, Charles Augustin de (1736–1806) | |
| CPU | |
| CRO | |
| Crookes, Sir William (1832–1919) | |
| cryogenics | |
| cryohydrate | |
| cryometer | |
| cryostat | |
| cryotron.dll | |
| cuka | |
| curie | |
| Curie, Marie (1867–1934) | |
| curium | |
