| Jerdan Taylor Ltd | Manufacturing | 2014 |
| Jetoma Ltd | Arts & recreation | 2022 |
| Jetzetterworld Ltd | Wholesale & retail | 2026 |
| JGB Steelcraft (U.K.) Limited | Manufacturing | 1991 |
| Jgml Landscapes Ltd | Administrative & support | 2020 |
| JHR Financial Services Limited | Professional & scientific | 2024 |
| Jigsaw Construction Group Ltd | Construction | 2015 |
| Jigsaw Storage Solutions Ltd | Construction | 2015 |
| Jill Best Medical Aesthetics Ltd | Health & social care | 2015 |
| Jimmit Ltd | Hospitality | 2024 |
| JJ Bar Solutions Ltd. | Hospitality | 2016 |
| JJJ Commercial Limited | Professional & scientific | 2018 |
| Jjsv Ltd | Wholesale & retail | 2018 |
| JK Beanbags Ltd | Manufacturing | 2026 |
| Jkapy Ltd | Professional & scientific | 2019 |
| JKK Properties Ltd | Real estate | 2018 |
| Jlj-Courier Ltd | Transport & logistics | 2026 |
| JLM Workshop Ltd | Construction | 2014 |
| JM Aesthetics Ltd | Health & social care | 2025 |
| JM Mobile Car Body Repairs Ltd | Wholesale & retail | 2024 |
| JM Properties (Scotland) Ltd | Real estate | 2024 |
| Jmadvisory&Consulting Limited | Administrative & support | 2023 |
| Jmax Properties Ltd | Real estate | 2018 |
| JMC Financial Solutions Ltd | Professional & scientific | 2025 |
| Jmcc Couriers Ltd | Transport & logistics | 2025 |
| Jmcn Medical Limited | Professional & scientific | 2025 |
| Jmcq Ltd | Health & social care | 2023 |
| JMM Hospitality Co Ltd | Hospitality | 2024 |
| Jmwm Catering Co Ltd | Hospitality | 2024 |
| Jmwm PUB Co Ltd | Hospitality | 2024 |
| JO Donaldson Photography Ltd | Professional & scientific | 2017 |
| Jo's Cafe (Renfrew) Limited | Hospitality | 2026 |
| JOE and Rose Ltd | Financial services | 2026 |
| John Baillie Carpets Limited | Wholesale & retail | 2018 |
| John Baillie Holdings Limited | Financial services | 2018 |
| John Baillie Residential Property Limited | Real estate | 2023 |
| John Baillie Signature Carpets Limited | Wholesale & retail | 2025 |
| John Brown 2 Courier Service Limited | Transport & logistics | 2022 |
| John C Young & SON Plumbing & Heating Ltd | Construction | 2019 |
| John M Taylor (Paisley) Ltd. | Professional & scientific | 2009 |
| John M Taylor Ltd | Extraterritorial | 2023 |
| John Ross International Trucking Company Ltd | Transport & logistics | 2015 |
| John Scott Meat (Paisley) Limited | Wholesale & retail | 1986 |
| John W Grant & SON (Coatbridge) Limited | Wholesale & retail | 2018 |
| John W Grant & SON (Kilmarnock) Limited | Wholesale & retail | 2018 |
| John W Grant & SON (Maryhill) Limited | Wholesale & retail | 2018 |
| John W Grant & SON (Paisley) Limited | Wholesale & retail | 2018 |
| John W Grant & SON (Properties) Limited | Real estate | 2018 |
| John W Grant & SON Group Limited | Wholesale & retail | 2018 |
| Johnstone Carpets Limited | Wholesale & retail | 2003 |
| Johnstone Martial Arts Group CIC | Arts & recreation | 2020 |
| Join the Nail Order Ltd | Wholesale & retail | 2020 |
| Jones & US Community Interest Company | Arts & recreation | 2018 |
| Journeyofanidea.Com Limited | Information & communication | 2023 |
| Jousouf Scotland Ltd | Hospitality | 2016 |
| Joyful Start Care Limited | Health & social care | 2025 |
| JP Delaney Dental Ltd | Health & social care | 2025 |
| JR Construction (Scotland) Limited | Construction | 2016 |
| JR Convenience Store Limited | Wholesale & retail | 2019 |
| JR Scaffold Services Ltd. | Construction | 1998 |
| JR Specialist Services Limited | Construction | 2009 |
| JRH Virtual Solutions Ltd | Administrative & support | 2018 |
| JRK Social Limited | Professional & scientific | 2025 |
| JRL Ventures Ltd | Professional & scientific | 2023 |
| JS Joinery (Ayrshire) Ltd | Construction | 2022 |
| JTM Access Ltd | Construction | 2025 |
| JTW Downie Tech Services Ltd. | Professional & scientific | 2016 |
| Juicy W Limited | Wholesale & retail | 2026 |
| Juicy WT Limited | Wholesale & retail | 2026 |
| Julie Bain Cosmetics Limited | Other services | 2020 |
| June Murray Wealth Management Ltd | Financial services | 2022 |
| Jupiter Mining Limited | Other services | 2015 |
| Jura Real Estate Ltd | Real estate | 2025 |
| Just Build IT Property Maintenance Ltd | Construction | 2025 |
| Just Dive in CIC | Education | 2020 |
| Just Dive Ltd | Education | 2019 |
| Just Trading Scotland Limited | Wholesale & retail | 2009 |
| Justine Mclellan Hair Loss and Education Ltd | Education | 2026 |
| JVK Investments Ltd | Construction | 2021 |
| JWC Digital Media Ltd | Wholesale & retail | 2023 |
| K & I Enterprise Ltd | Hospitality | 2026 |
| K & P Rentals Ltd | Real estate | 2025 |
| K a Balloons Ltd | Wholesale & retail | 2023 |
| K Easdon Limited | Professional & scientific | 2023 |
| K M Care Management Limited | Health & social care | 2014 |
| K O Joiners Limited | Construction | 2007 |
| K Property Rental Ltd | Other services | 2020 |
| K.S.A. Tool Hire Ltd. | Administrative & support | 2006 |
| K.S.B. Properties (Scotland) Limited | Real estate | 1993 |
| K9 Klips (Renfrew) Limited | Other services | 2021 |
| KA Plant Hire Ltd | Wholesale & retail | 2020 |
| KA4 Foods Ltd | Wholesale & retail | 2025 |
| KA4 Subs Ltd | Hospitality | 2026 |
| KADO2 Ltd | Wholesale & retail | 2024 |
| KAE Maintenance Ltd | Construction | 2020 |
| Kaizen Cloud Consultancy Ltd | Information & communication | 2024 |
| Kakem Logistics Solutions Ltd | Transport & logistics | 2026 |
| Kaleek Limited | Financial services | 2018 |
| Kallen Consultancy Ltd | Professional & scientific | 2026 |
| Kaltech Services Limited | Professional & scientific | 2008 |