| JMR Customer Service Consultancy Limited | Professional & scientific | 2025 |
| Jmtaverns Ltd | Hospitality | 2024 |
| JOANNAMAY321 Ltd | Real estate | 2023 |
| John Cullen & Sons Ltd. | Construction | 1992 |
| John Jenkins & SON (Scotland) Ltd. | Manufacturing | 2003 |
| John Mcleod Joiners & Glaziers Ltd. | Other services | 2017 |
| John Neil Butchers Ltd | Wholesale & retail | 2012 |
| Johnathon Spence Ltd | Professional & scientific | 2024 |
| Johnston Greer Ltd. | Administrative & support | 2004 |
| Johnston Hotels Ltd | Hospitality | 2006 |
| Johnston Property Holdings Ltd | Real estate | 2026 |
| Johnston's Plumbing & Multitrade Ltd | Construction | 2022 |
| JOINT2JOINT Spray Services Ltd | Construction | 2016 |
| Jordan HAY Landscaping & Groundworks Ltd. | Construction | 2021 |
| JPJ Sealants Ltd | Construction | 2020 |
| JRL Realty Ltd | Energy | 2023 |
| JSP Central Limited | Real estate | 2021 |
| JSR Plant & Labour Ltd. | Construction | 2024 |
| Juana Professional Quiromassage Limited | Health & social care | 2022 |
| Jungle Academy School of BJJ Ltd | Education | 2022 |
| Just Sign Limited | Professional & scientific | 2004 |
| Jutacos Limited | Education | 2024 |
| JV Abode Ltd | Real estate | 2020 |
| JW Network Security Ltd | Information & communication | 2025 |
| Jwsa Consultancy Limited | Professional & scientific | 2024 |
| K & R Graham Properties Ltd | Real estate | 2021 |
| K D Ferguson Ltd. | Agriculture & fishing | 2022 |
| K F Electrical Falkirk Limited | Manufacturing | 2023 |
| K G Properties (Scotland) Limited | Real estate | 2017 |
| K J Mcqueenie Ltd | Professional & scientific | 2012 |
| K K Properties Falkirk Ltd | Real estate | 2021 |
| K&Mretailgroup Ltd | Wholesale & retail | 2025 |
| K4 Civils Scotland Ltd | Construction | 2024 |
| K8LM Ltd | Wholesale & retail | 2025 |
| KA Equestrian Limited | Agriculture & fishing | 2024 |
| KA Scotland Ltd | Hospitality | 2020 |
| KA Services Scotland Limited | Hospitality | 2025 |
| KAA Restaurants Ltd | Hospitality | 2022 |
| KAA Retail Ltd | Hospitality | 2024 |
| Kaaa Solutions Limited | Hospitality | 2025 |
| Kala Bhairava Restaurants Limited | Hospitality | 2024 |
| Kalydonia Ltd | Wholesale & retail | 2022 |
| KAM Malik Ltd | Transport & logistics | 2026 |
| KAM Rentals Ltd | Real estate | 2025 |
| Kamm Construction Ltd | Construction | 2025 |
| Kandoo Scotland Ltd | Transport & logistics | 2012 |
| Kanz Properties Ltd | Real estate | 2026 |
| Kara Consultancy Services Limited | Administrative & support | 2024 |
| Karta Construction Ltd | Construction | 2021 |
| Karta Developments Ltd | Construction | 2023 |
| KAS Property Development Ltd | Real estate | 2026 |
| Kaswa Trader Ltd | Wholesale & retail | 2018 |
| Katerose Ltd | Information & communication | 2022 |
| Katie Solutions Ltd | Wholesale & retail | 2013 |
| Kativix Ltd | Professional & scientific | 2018 |
| Katmar Property Ltd | Households | 2020 |
| Kaul Group Ltd | Real estate | 2020 |
| KAW Property Solutions Limited | Real estate | 2026 |
| Kaymac Development Services Ltd | Construction | 2022 |
| Kays Accountancy Ltd | Professional & scientific | 2019 |
| KAZ44 Ltd | Real estate | 2024 |
| Kbsc Catering Limited | Hospitality | 2025 |
| Keal Test Services Limited | Construction | 2011 |
| Kebabish FK2 Limited | Hospitality | 2025 |
| Kebabjees Ltd | Hospitality | 2026 |
| Keddie Property Co Ltd. | Real estate | 2025 |
| Kelly Mitchell Automotive Ltd | Mining & quarrying | 2012 |
| Kelpie Construction Ltd | Construction | 2023 |
| Kelpie Mortgages and Protection Ltd | Financial services | 2023 |
| Kelpies Accommodation Ltd | Hospitality | 2022 |
| Kelpies Central Ltd | Hospitality | 2022 |
| Kelpies Central Scotland Ltd | Hospitality | 2023 |
| Kelpies Group Ltd | Hospitality | 2022 |
| Kelpies Properties Ltd | Mining & quarrying | 2019 |
| Kelpies Serviced Apartments Ltd | Hospitality | 2017 |
| Kelpitech Ltd | Wholesale & retail | 2023 |
| Kenz Designs Ltd | Construction | 2023 |
| Kenz Developments Ltd | Real estate | 2025 |
| Keogh & Savage (Greenock) Limited | Real estate | 1957 |
| Keogh & Savage (Investments) Limited | Real estate | 1965 |
| KEP Fencing Ltd. | Administrative & support | 2020 |
| Kerr Projects Ltd. | Professional & scientific | 2020 |
| Kerse Property Services Ltd. | Real estate | 2010 |
| Kersebrock Kabins Limited | Hospitality | 2018 |
| Kersehill Limited | Administrative & support | 2013 |
| Kersehill Timber Frame Erectors and Joiners Ltd | Construction | 2025 |
| Key Safe Marketing Ltd | Professional & scientific | 2026 |
| Key Scribe Ltd | Other services | 2021 |
| Keyholders International Property Group Ltd | Construction | 2015 |
| KGR Lettings Ltd | Real estate | 2024 |
| KGR Transport Ltd | Transport & logistics | 2025 |
| KH Hairdressing Ltd | Other services | 2014 |
| KH1 Barber Ltd | Other services | 2025 |
| Khan Homes (Scotland) Limited | Real estate | 2020 |
| Khan Homes Investment Limited | Construction | 2022 |
| Khin Traders Ltd | Wholesale & retail | 2025 |
| Khizar Traders Ltd | Wholesale & retail | 2023 |
| KHS Access Limited | Construction | 2017 |
| Kidz World Nursery Limited | Education | 2009 |
| Kiing-Hans Electrical Services Ltd | Administrative & support | 2017 |