| Partrederiet Sofie Da | Agriculture & fishing | 1996 |
| Perfect Partner Lofoten AS | Professional & scientific | 2007 |
| Pge Holding AS | | 2020 |
| Plug Lofoten AS | Professional & scientific | 2022 |
| Plug Nord AS | | 2022 |
| Plug Vågan AS | Transport & logistics | 2023 |
| Presenta Norge AS | Professional & scientific | 2004 |
| Prestengbrygga Eiendom AS | Real estate | 2009 |
| Prima Torsk AS | Agriculture & fishing | 2008 |
| Private Living Lofoten AS | Hospitality | 2020 |
| Proff Investment AS | Construction | 2017 |
| Proff Maling AS | Construction | 2016 |
| Promo Norge AS | Professional & scientific | 2006 |
| Purkholmen AS | Real estate | 2015 |
| Ravnkloa Eiendom AS | Real estate | 2025 |
| Rejo Bil AS | Wholesale & retail | 2020 |
| Retur Lofoten AS | Wholesale & retail | 2017 |
| Revinord AS | Professional & scientific | 2017 |
| Rib Lofoten AS | Transport & logistics | 2011 |
| Ringsenteret AS | Wholesale & retail | 1988 |
| RMS Kapitalforvaltning AS | Real estate | 1997 |
| Rot Holding AS | Professional & scientific | 2006 |
| Rundtind AS | Real estate | 2005 |
| Rutland Senior AS | Agriculture & fishing | 2010 |
| Rækøya Eiendom AS | Real estate | 2023 |
| Rødsand Holding AS | Wholesale & retail | 2005 |
| Rørleggermester Frank Størkersen AS | Construction | 2005 |
| Røyt Holding AS | | 2026 |
| Saga Fisk AS | Manufacturing | 2011 |
| Sakura Lofoten AS | Hospitality | 2021 |
| Salong Bellami AS | Other services | 2016 |
| Salong Clarke AS | Other services | 2020 |
| Salt Lofoten AS | Professional & scientific | 2010 |
| Salt Research AS | Professional & scientific | 2022 |
| Scan Protec AS | Manufacturing | 2015 |
| Seasy Data AS | Information & communication | 2025 |
| Secora AS | Construction | 2004 |
| Setretangen Invest AS | Real estate | 2005 |
| Shila AS | Professional & scientific | 2005 |
| Siglar Eiendom AS | Manufacturing | 2010 |
| Signal AS | Professional & scientific | 2019 |
| Sildpollnes Resort AS | Hospitality | 2026 |
| Silvestris Invest AS | Real estate | 2021 |
| Sirius Skipper & Yachting Services AS | Construction | 2017 |
| Siv Ing Yngve Fredriksen AS | Professional & scientific | 1990 |
| Sivert Nilsensgate 53 AS | Real estate | 2015 |
| Siviløkonom Tor Henriksen AS | Professional & scientific | 2007 |
| SJ Fisk AS | Agriculture & fishing | 2018 |
| Sjøliv AS | Agriculture & fishing | 2001 |
| Sjømannslege Aleksander D. Olsen AS | Health & social care | 2013 |
| Skarvik AS | Manufacturing | 1994 |
| Skarvik Eiendom AS | Real estate | 1987 |
| Skintonic Svolvær AS | Wholesale & retail | 2013 |
| Sko & Garn AS | Wholesale & retail | 1991 |
| Skoglund Invest AS | Financial services | 2012 |
| Skrova Havn AS | Real estate | 2010 |
| Småtindan AS | Hospitality | 2009 |
| SNG 13 AS | Real estate | 2022 |
| Sofie Schultz AS | Other services | 2024 |
| Sofie Svolvær AS | Agriculture & fishing | 2005 |
| Solheim Barnehage AS | Education | 1997 |
| Soria Holding AS | Real estate | 2019 |
| Spesial Lakkering AS | Other services | 1990 |
| Sportshuset Svolvær AS | Wholesale & retail | 2012 |
| Staal Holding AS | | 2021 |
| Stangnesterminalen 5 AS | Real estate | 2021 |
| Starn AS | Agriculture & fishing | 2018 |
| Stensvold Fisk AS | Agriculture & fishing | 2018 |
| Stjernen AS | Agriculture & fishing | 2021 |
| STK Eiendom AS | Wholesale & retail | 2015 |
| Stordahl Kapital AS | | 2025 |
| Storgata 32-34 AS | Real estate | 2016 |
| Storgata 40 Svolvær AS | Real estate | 2026 |
| Storgata 40 Svolvær Temp AS | Real estate | 2026 |
| Storhaug AS | Arts & recreation | 2019 |
| Storøya Handel AS | Wholesale & retail | 1954 |
| Storøya Handel Eiendom AS | Real estate | 2016 |
| Storøyodden Panorama AS | Real estate | 2024 |
| Storøyveien 60 AS | Real estate | 2021 |
| Stranda Stadion AS | Real estate | 2025 |
| Stratholme AS | | 2019 |
| Straumberg Drift AS | Agriculture & fishing | 2016 |
| Studio L Academy AS | Other services | 2026 |
| Studio L AS | Other services | 2011 |
| Sunbranch AS | Information & communication | 2025 |
| Sunbranch Holding AS | | 2026 |
| Sunbranch Media AS | Information & communication | 2026 |
| Svenning Holding AS | Construction | 2021 |
| Svinøya AS | Real estate | 2013 |
| Svinøya Rorbuer AS | Hospitality | 2008 |
| Svoblikk Eiendom AS | Construction | 2012 |
| Svolvær 1803 AS | Real estate | 2006 |
| Svolvær Asia Butikk AS | Wholesale & retail | 2015 |
| Svolvær Blikkenslagerverksted AS | Construction | 2020 |
| Svolvær Bowlingsenter AS | Arts & recreation | 2011 |
| Svolvær Byggeselskap AS | Real estate | 1917 |
| Svolvær Byggshop Wold Eltoft Ans | | 1989 |
| Svolvær Båt Og Hydraulikk AS | Manufacturing | 2025 |
| Svolvær Dagligvarer AS | Wholesale & retail | 2025 |
| Svolvær Eiendom II AS | Real estate | 2025 |