| Sahara | Reykjavík Constituency North |
| Samsýn ehf. | Reykjavík Constituency North |
| Sensa ehf. | Reykjavík Constituency North |
| SherpaPower | |
| Sidekick Health | Southwest Constituency |
| Sigríður Margrét Oddsdóttir | |
| Silent Flyer | |
| Siminn | Reykjavík Constituency North |
| Skýrslutæknifélag Íslands | Reykjavík Constituency North |
| Snerpa ehf. | Northwest Constituency |
| Solid Clouds hf. | Southwest Constituency |
| Sparisjóðurinn | |
| Startup Iceland | Reykjavík Constituency North |
| Startup Resources | Reykjavík Constituency North |
| Startup Reykjavík | Reykjavík Constituency North |
| Stefna | Northeast Constituency |
| Stiki whf. | Reykjavík Constituency North |
| Stockvault.net | |
| Stokkur Software | Reykjavík Constituency North |
| Syndis Ehf. | |
| Taktikal | Reykjavík Constituency North |
| TechState | |
| The Engine Iceland ehf. | Reykjavík Constituency North |
| Tixly ehf | |
| TrackWell | Reykjavík Constituency North |
| Trappa þjónusta ehf. | |
| Treble Technologies Ehf. | |
| TripCreator | Reykjavík Constituency North |
| Valorka ehf. | |
| Varist ehf. | |
| Verne Global | Southwest Constituency |
| Viska | |
| Vodafone Iceland | Reykjavík Constituency North |
| WebMo Design | |
| Whiteboard | |
| Wise lausnir ehf. | Reykjavík Constituency North |
| Ymir Mobile ehf. | Reykjavík Constituency North |
| Ýmir technologies | |