| Contel Technologies | Central District |
| Control Applications Ltd | Tel Aviv District |
| ControlMonkey Ltd | |
| Controp | |
| ConvertFiles | |
| Convizit Ltd | |
| Copia Agro & Food | Tel Aviv District |
| CopterPix | Southern District |
| Coral Creative Technologies | |
| Core C++ | |
| Corephotonics Ltd | Tel Aviv District |
| CoreTigo | Central District |
| CoroNet | Tel Aviv District |
| Corsight AI | Tel Aviv District |
| Cortica | Tel Aviv District |
| Corundum Neuroscience Ltd | |
| Council for Higher Education | |
| Craft.io | Tel Aviv District |
| Crescendo Venture Partners | |
| Crispify Ltd | |
| Crossroad Venture Capital Fund | Tel Aviv District |
| Crowdsense | Tel Aviv District |
| CTECH by Calcalist | Central District |
| CTNT Ltd | Southern District |
| Cubus | Central District |
| Cukierman & Co. Investment House Ltd | Tel Aviv District |
| Curesponse | Central District |
| Cyabra | Tel Aviv District |
| Cybele Holdings | Tel Aviv District |
| Cybellum | Tel Aviv District |
| Cyber 2.0 | Central District |
| Cyber Observer | Haifa District |
| Cyberbit | Central District |
| CyberDB | Tel Aviv District |
| CybeReady | Tel Aviv District |
| CybergymIEC | |
| CyberIL | |
| Cyberint | Central District |
| Cyberm8 | |
| CyberRidge | |
| CyberSafe | |
| CyberServe | Tel Aviv District |
| Cybersixgill | |
| Cybertech | Tel Aviv District |
| Cybonet | Haifa District |
| Cyborg | Tel Aviv District |
| Cyclops | Tel Aviv District |
| Cycode Ltd | Tel Aviv District |
| Cydome | Tel Aviv District |
| Cyesec | |