| Kamino Technologies d.o.o. | |
| Kapa-Spin d.o.o. | |
| Kapetanovic sistemi d.o.o. | City of Zagreb |
| Katapult promocija d.o.o. | |
| Kinetic d.o.o. | |
| King ICT | City of Zagreb |
| Kiosk studio | City of Zagreb |
| Klub mladih Split | |
| Kodeks d.o.o. | City of Zagreb |
| Kodilion d.o.o. | |
| Kodius | |
| KOIOS consulting Ltd | |
| Kompro d.o.o. | Osijek-Baranja |
| Komteh d.o.o. | City of Zagreb |
| Konferencija Web::Strategija | City of Zagreb |
| Konica Minolta Hrvatska - poslovna rješenja d.o.o. | |
| KönigSoftWare | Vukovar-Srijem |
| Kontek d.o.o. | |
| KONTO d.o.o. | Požega-Slavonia |
| Kontra Agency | City of Zagreb |
| Kosinus | Koprivnica-Križevci |
| Kreativa Studio | |
| Krk sistemi d.o.o. | Primorje-Gorski Kotar |
| Kron d.o.o. | Split-Dalmatia |
| Kronos d.o.o. | City of Zagreb |
| Krtech Digital d.o.o. | |
| KSU d.o.o. | City of Zagreb |
| Kuhada d.o.o. | City of Zagreb |
| Kvark d.o.o. | City of Zagreb |
| Kvark-projekt | |
| L33T | Zagreb |
| Lab2000 d.o.o. | |
| Labtera d.o.o. | City of Zagreb |
| Lagos Dubrovnik Ltd | Dubrovnik-Neretva |
| LAMA | |
| Laser Line d.o.o. | Istria |
| Lator d.o.o. | City of Zagreb |
| Laus CC d.o.o. | Dubrovnik-Neretva |
| Layer d.o.o. | |
| Leapwise d.o.o. | |
| Lega d.o.o. | |
| Lelteh d.o.o. | City of Zagreb |
| Lemax d.o.o. | City of Zagreb |
| Lendica Razvoj j.d.o.o. | |
| Libratel d.o.o. | City of Zagreb |
| Libusoft Cicom d.o.o. | |
| Lloyds Digital | |
| Locatel d.o.o. | Istria |
| logicBRICKS | City of Zagreb |
| Logika d.o.o. | City of Zagreb |