| Knävelborren AB | Handen | 0 tkr |
| Knicke AB | Vendelsö | 0 tkr |
| Kolartorp Transport & Fastighet AB | Handen | 0 tkr |
| Kompotek Group AB | Jordbro | 0 tkr |
| KomSamman AB | Tungelsta | 0 tkr |
| Konba AB | Vendelsö | 0 tkr |
| Königsmark Holding AB | Haninge | 0 tkr |
| Konnebäck i Stockholm AB | Stockholm | 0 tkr |
| Kontorsfrid AB | Norrby | 0 tkr |
| Koordinator Byggkonsult Stockholm AB | Uppsala | 0 tkr |
| KP Bygg och Snickeri AB | Hägersten | 0 tkr |
| Kronskrinet AB | Österhaninge | 0 tkr |
| Krylborn Invest AB | Västerhaninge | 0 tkr |
| KS4 AB | Östhammar | 0 tkr |
| KTN Alvsta AB | Västerhaninge | 0 tkr |
| Kulme Investment AB | Haninge | 0 tkr |
| Kumla Bil Aktiebolag | Ösmo | 0 tkr |
| KÜMMERLING INVEST AB | Handen | 0 tkr |
| KunskapsAktivering i Haninge AB | Vendelsö | 0 tkr |
| Kustcato AB | Årsta Havsbad | 0 tkr |
| Kyrkvretens Konsulting AB | Västerhaninge | 0 tkr |
| Laborixon AB | Upplands Väsby | 0 tkr |
| Lady Producer Holding AB | Vega | 0 tkr |
| Lala Salama AB | Utö | 0 tkr |
| Lamphuan AB | Tungelsta | 0 tkr |
| Laninet Solutions AB | Haninge | 0 tkr |
| Lännåkersviken AB | Österhaninge | 0 tkr |
| LAR Holding AB | Jordbro | 0 tkr |
| Lätta Trycket, Göran Asplund Aktiebolag | Huddinge | 0 tkr |
| Lavach AB | Årsta | 0 tkr |
| Ledandebygg Stockholm AB | Österhaninge | 0 tkr |
| Lekander Alpha AB | Vendelsö | 0 tkr |
| Lekbox Sverige AB | Vega | 0 tkr |
| Lena Licke utveckling AB | Vendelsö | 0 tkr |
| Lena Otteberg Strandberg AB | Vendelsö | 0 tkr |
| Lenas Hästservice AB | Vega | 0 tkr |
| Lennart Bjurström AB | Fårö | 0 tkr |
| Lervik VVS i Jordbro AB | Nynäshamn | 0 tkr |
| Le Studio 5 AB | Stockholm | 0 tkr |
| Lev IC AB | Nacka Strand | 0 tkr |
| L-Hus Södertörn AB | Vendelsö | 0 tkr |
| Lia Konsult AB | Grödinge | 0 tkr |
| LimeSense AB | Upplands Väsby | 0 tkr |
| Linda Marie HR-konsult AB | Skogås | 0 tkr |
| Lindblom Juridik AB | Vendelsö | 0 tkr |
| Linden & Lindell Holding AB | Vendelsö | 0 tkr |
| Lindoff Holding AB | Dalarö | 0 tkr |
| LinnoKnut Holding AB | Västerhaninge | 0 tkr |
| Liteskog Holding AB | Handen | 0 tkr |
| LiveHelpTech AB | Grödinge | 0 tkr |