| Just a WEE Gift Ltd | Wholesale & retail | 2021 |
| Just Behold Ltd | Real estate | 2023 |
| Just Drive IT Ltd | Transport & logistics | 2023 |
| Just Inputting Limited | Administrative & support | 2016 |
| Just Mot's Aberdeen Ltd | Wholesale & retail | 2026 |
| Just Professional Solutions Ltd | Administrative & support | 2021 |
| Just This Ltd | Wholesale & retail | 2024 |
| Justice Mill Kebab Ltd | Hospitality | 2024 |
| Justnamez Limited | Wholesale & retail | 2014 |
| Jutila Ltd | Professional & scientific | 2004 |
| JVK Engserv Ltd | Mining & quarrying | 2016 |
| JW Kegs Commercial Ltd | Other services | 2020 |
| JW Kegs Ltd | Wholesale & retail | 2017 |
| JW Kegs Properties Ltd | Real estate | 2023 |
| JW Kegs(Scotland) Ltd | Other services | 2022 |
| Jw's Sushi Limited | Hospitality | 2016 |
| JWC Granite City Ltd | Water & waste | 2019 |
| JWC Services Limited | Professional & scientific | 2003 |
| JWG Investments Limited | Administrative & support | 2014 |
| Jwgusa Holdings Limited | Financial services | 1997 |
| Jwin Consultancy Limited | Professional & scientific | 2021 |
| JWW Properties Limited | Real estate | 2016 |
| JZ IT Consulting Limited | Information & communication | 2026 |
| Jz.Ndt Inspection Ltd | Mining & quarrying | 2019 |
| K & a Hutcheon Ltd | Hospitality | 2021 |
| K & C Inspection Services Ltd | Professional & scientific | 2018 |
| K & F Legacy Ltd | Real estate | 2025 |
| K & G Coatings Limited | Construction | 2025 |
| K & M (Aberdeen) Limited | Administrative & support | 2010 |
| K a Massie Ltd | Administrative & support | 2019 |
| K M Geoscience Limited | Professional & scientific | 1997 |
| K&K Arora Mart Limited | Wholesale & retail | 2026 |
| K&K Dental Ltd | Professional & scientific | 2023 |
| K&R International Trading (UK) Ltd | Information & communication | 2025 |
| K'Chion UK Ltd | Transport & logistics | 2009 |
| K-Mac Electrical Limited | Construction | 2006 |
| K-Max Services Ltd. | Other services | 2006 |
| K.G.B Rigging & Lifting Solutions Limited | Mining & quarrying | 2022 |
| K.U.M. Offshore Limited | Wholesale & retail | 2019 |
| K1 Consultancy Services Ltd | Professional & scientific | 2016 |
| K2 Fast Foods Ltd | Hospitality | 2024 |
| K2 Weld Wise Ltd | Manufacturing | 2024 |
| K2M Bioscience Limited | Professional & scientific | 2016 |
| K8 Tyres Limited | Manufacturing | 2015 |
| K9 Dog Run Ltd | Other services | 2025 |
| K9 Hydrotherapy Centre Ltd | Professional & scientific | 2006 |
| K9 Total Care Ltd | Professional & scientific | 2008 |
| K999 Limited | Professional & scientific | 2015 |
| K9CC Ltd | Agriculture & fishing | 2015 |
| KA Cleaner Ltd | Administrative & support | 2023 |
| Kaarada Drilling Ltd | Professional & scientific | 2010 |
| Kaaya Enterprises Ltd | Professional & scientific | 2017 |
| Kaaya Smile Limited | Other services | 2011 |
| Kabod Healthcare Ltd | Administrative & support | 2025 |
| Kabodhi Limited | Information & communication | 2025 |
| Kadampa Meditation Centre Aberdeen | Education | 2005 |
| Kadosh Hair Limited | Other services | 2013 |
| KAE Subsea Ltd | Professional & scientific | 2026 |
| Kaflow Limited | Mining & quarrying | 2021 |
| Kahlmah Ltd | Health & social care | 2021 |
| Kaimservices Ltd | Professional & scientific | 2025 |
| Kaivi Design Ltd | Information & communication | 2019 |
| Kaizo Sustainable Solutions Ltd | Information & communication | 2024 |
| Kalacom Limited | Other services | 2010 |
| Kaloil Services Ltd | Mining & quarrying | 2015 |
| KAM Ropes Ltd | Mining & quarrying | 2025 |
| Kamala Restaurant Ltd | Hospitality | 2018 |
| Kamalia Ltd | Hospitality | 2024 |
| Kamel Neuro Ltd | Health & social care | 2017 |
| Kamila Duncan-Rodziewicz Ltd | Professional & scientific | 2025 |
| Kamlee Trading Limited | Hospitality | 2026 |
| Kamsinure Foods Ltd | Manufacturing | 2019 |
| Kamya Consulting Limited | Water & waste | 2004 |
| KAN ENG Services Limited | Professional & scientific | 2017 |
| Kaneng Limited | Professional & scientific | 2016 |
| Kani Traders Ltd | Wholesale & retail | 2021 |
| Kanso Limited | Manufacturing | 2017 |
| Kapadokia Limited | Hospitality | 2025 |
| Kapwell Ltd | Manufacturing | 2011 |
| Karbon (Aberdeen) Ltd | Wholesale & retail | 2021 |
| Kards by KAT Ltd | Wholesale & retail | 2023 |
| Karen Mckimmie Limited | Professional & scientific | 2007 |
| Karen Morrice Limited | Other services | 2020 |
| Karin Ovari Limited | Professional & scientific | 2016 |
| Karios Ventures Ltd | Real estate | 2024 |
| Karleato Subsea Services Ltd | Professional & scientific | 2012 |
| Karma Contract Services Ltd | Professional & scientific | 2023 |
| Karolina Curtains and Blinds Ltd | Manufacturing | 2025 |
| Karon Properties Limited | Real estate | 1979 |
| Karosah Limited | Professional & scientific | 2014 |
| Karpinski TV Limited | Construction | 2024 |
| Karro Food Limited | Manufacturing | 2001 |
| Karro ICT Services Limited | Administrative & support | 1986 |
| Kart Property Ltd | Real estate | 2025 |
| Kaseum Holdings Limited | Professional & scientific | 2017 |
| Kaseum Technology Limited | Professional & scientific | 2017 |
| Kaskade Ltd | Information & communication | 2025 |
| Kaspo Rope Access Ltd | Extraterritorial | 2025 |
| Kate Steenhauer Limited | Other services | 2017 |
| Katherine Rose Coaching Ltd | Health & social care | 2026 |