| A H Sinclair Ltd | Health & social care | 2018 |
| Alison Moore Designs Limited | Manufacturing | 2015 |
| Anderson's Harbour Cottages LLP | | 2019 |
| Aquatera Group Limited | Professional & scientific | 2019 |
| Aquatera Limited | Professional & scientific | 2000 |
| Arctic Fulmar Limited | Professional & scientific | 2018 |
| Argo's Bakery Limited | Manufacturing | 1983 |
| Arranmore Engineering Limited | Professional & scientific | 2024 |
| Bayleaf Delicatessen LLP | | 2012 |
| Biotikos Limited | Professional & scientific | 2008 |
| Black Lobster Studio Ltd | Hospitality | 2026 |
| Breckan Limited | Manufacturing | 1999 |
| Climate Tech Venture LP | | 2021 |
| Coltherd Limited | Construction | 2023 |
| Congesquoy Barn LLP | | 2019 |
| CR Electrical (Orkney) Ltd | Construction | 2025 |
| Cracka Longi Limited | Energy | 2017 |
| Craigie Engineering Sales & Services Ltd | Wholesale & retail | 2010 |
| Cuilags Limited | Professional & scientific | 2020 |
| D D H Orkney Ltd | Real estate | 2026 |
| DP5 Consulting Limited | Professional & scientific | 2020 |
| E Flett Butcher Ltd | Wholesale & retail | 2015 |
| Electrical Rope Access Solutions Ltd | Other services | 2010 |
| Emec Hydrogen Limited | Wholesale & retail | 2018 |
| Fast Vessel Charters Ltd | Transport & logistics | 2015 |
| Firth Consultancy Ltd | Professional & scientific | 2024 |
| Flotta Partnership | Administrative & support | 2010 |
| Fora Energy Ltd | Professional & scientific | 2025 |
| Fort Argyll Limited | Agriculture & fishing | 2020 |
| Future Engineering Consultants Limited | Mining & quarrying | 2004 |
| G J Paterson Ltd | Other services | 2014 |
| Gable END Theatre Co. Ltd. | Arts & recreation | 2000 |
| Gairsty Quarry Ltd | Mining & quarrying | 2010 |
| Geoseis Offshore Ltd | Professional & scientific | 2016 |
| Go Orkney Limited | Administrative & support | 2025 |
| Golden Slipper Brewing Company Limited | Manufacturing | 2024 |
| Goodall Business Services Limited | Administrative & support | 2022 |
| Green Marine (UK) Limited | Professional & scientific | 2012 |
| Green Marine Holdings Ltd | Financial services | 2022 |
| Greenhill Fishing Ltd | Agriculture & fishing | 2019 |
| Halton Charters Limited | Arts & recreation | 2013 |
| Hammars Hill Energy Limited | Energy | 2006 |
| Haven Bay Environmental Ltd | Professional & scientific | 2025 |
| Hellihole Limited | Professional & scientific | 2013 |
| Highland Tiger Limited | Hospitality | 2017 |
| Housegarth Limited | Hospitality | 2024 |
| HOY Energy Limited | Energy | 2009 |
| Huskyan Limited | Arts & recreation | 2017 |
| Hydrojon Limited | Professional & scientific | 2022 |
| ICW Cleaning & Property Services Ltd | Administrative & support | 2026 |
| Ilease Ltd | Financial services | 2026 |
| Isbister Bros. Limited | Wholesale & retail | 1994 |
| Isla LYS Limited | Administrative & support | 2018 |
| J F Mechanics Ltd | Wholesale & retail | 2026 |
| James Wilson (Orkney) Limited | Wholesale & retail | 1996 |
| Johnson IT Services Limited | Information & communication | 2015 |
| K9 Detection Scotland Ltd | Other services | 2025 |
| Kevin Gillette GIS Ltd | Information & communication | 2022 |
| Kodevia Ltd | Other services | 2025 |
| Kristin Linklater Voice Centre Limited | Education | 2012 |
| Kytra Analytics Limited | Information & communication | 2025 |
| Leona Leslie Ltd | Financial services | 2024 |
| Longigill Ltd | Real estate | 2023 |
| Mcandrew Media Limited | Information & communication | 1994 |
| MCH Smile Ltd | Health & social care | 2018 |
| Melsetter Farms Ltd | Agriculture & fishing | 2020 |
| Millfield Farm Services Limited | Wholesale & retail | 2022 |
| Misbister Limited | Agriculture & fishing | 2015 |
| New Holland Wind LLP | | 2014 |
| North Isles Properties Ltd | Real estate | 2024 |
| North Wind Associates Limited | Professional & scientific | 2007 |
| Offshore Engineering Ltd | Professional & scientific | 2023 |
| Orkney Accommodation Ltd | Hospitality | 2024 |
| Orkney Amusement & Catering Ltd | Hospitality | 2022 |
| Orkney BJJ CIC | Arts & recreation | 2023 |
| Orkney Crab Limited | Other services | 2023 |
| Orkney Craft Vinegar Ltd | Manufacturing | 2019 |
| Orkney Creative Hub Community Interest Company | Arts & recreation | 2015 |
| Orkney Escapes Ltd | Hospitality | 2014 |
| Orkney Fudge Ltd. | Manufacturing | 1999 |
| Orkney Hyperbaric Trust | Health & social care | 2003 |
| Orkney I. O. Ltd | Real estate | 2012 |
| Orkney Island Hotels Ltd | Hospitality | 2011 |
| Orkney LUX Lodges Ltd | Hospitality | 2021 |
| Orkney News Ltd | Information & communication | 2017 |
| Orkney Oysters Ltd | Agriculture & fishing | 2019 |
| Orkney Renewable Energy Forum | Other services | 2005 |
| Orkney Shooting Holidays Ltd | Other services | 2017 |
| Orkney Storehouse Limited | Wholesale & retail | 2017 |
| Orkney Sustainability Partners Limited | Other services | 2019 |
| Orkney Tourism Services Limited | Transport & logistics | 2022 |
| Orkney Transport | Transport & logistics | 2023 |
| Orlog Limited | Administrative & support | 2014 |
| P & F Ross Ltd | Agriculture & fishing | 2017 |
| P&K Marine Ltd | Professional & scientific | 2016 |
| Paris’S Mobile Valeting Ltd | Administrative & support | 2025 |
| Paymán Holdings 10 Ltd | Hospitality | 2021 |
| Paymán Holdings 11 Ltd | Hospitality | 2021 |
| Paymán Holdings 12 Ltd | Hospitality | 2021 |
| Paymán Holdings 13 Ltd | Hospitality | 2021 |