| Inverness Ahead Ltd | Professional & scientific | 2024 |
| Inversnecky (Aberdeen) Limited | Hospitality | 1978 |
| IQ Integrity Limited | Information & communication | 2009 |
| IT Hotdesk Ltd. | Information & communication | 2005 |
| IWD Consulting Ltd | Professional & scientific | 2011 |
| J & G Aberdeen Limited | Hospitality | 2017 |
| J & H Engineering (Aberdeen) Ltd | Professional & scientific | 2022 |
| J&M Ventures Group Ltd | Mining & quarrying | 2023 |
| Jager Offshore Safety Limited | Professional & scientific | 2011 |
| James S. Youngson Limited | Administrative & support | 2004 |
| JCS Data Services Ltd | Information & communication | 2015 |
| Jennings Private Hire Limited | Transport & logistics | 2009 |
| JFD Limited | Manufacturing | 1990 |
| JGN Project Services Limited | Other services | 2010 |
| JIE Group Limited | Administrative & support | 2021 |
| JIE Property Management Ltd | Real estate | 2021 |
| JLM Mortgage Services (Aberdeen) Ltd | Financial services | 2025 |
| JMP Properties (UK) Ltd | Hospitality | 2003 |
| JMR Logistics Limited | Transport & logistics | 2005 |
| Jodd Limited | Professional & scientific | 2008 |
| JPN Financial Consulting Ltd | Financial services | 2015 |
| Jrei Services Ltd | Professional & scientific | 2023 |
| JSD Joineries Ltd | Construction | 2010 |
| JSG Properties Ltd | Real estate | 2021 |
| JSH Property Renovations Ltd | Manufacturing | 2025 |
| Jupiter Electronics Ltd | Manufacturing | 2018 |
| K & S Smith Limited | Wholesale & retail | 2004 |
| Kalarox Ltd | Professional & scientific | 2024 |
| Kalor Consultancy Limited | Professional & scientific | 2019 |
| Karab Ltd | Professional & scientific | 2017 |
| Kayceedee Engineering Services Limited | Professional & scientific | 2015 |
| KD Automotive Holdings Ltd | Professional & scientific | 2026 |
| Keelylang Ltd | Administrative & support | 2022 |
| Keenon Procurement Limited | Administrative & support | 2017 |
| Keepingitcountry Limited | Wholesale & retail | 2024 |
| Keith Mitchell Ltd. | Construction | 2010 |
| Kgbc Engineering Limited | Professional & scientific | 2008 |
| Kiermac Services Limited | Professional & scientific | 2008 |
| Kilrymont Services Limited | Professional & scientific | 2010 |
| Kimetsan Aerospace and Defence Coatings Ltd. | Professional & scientific | 2000 |
| Kincluny Development Trust | Real estate | 2011 |
| Kirkton of Skene Ltd | Hospitality | 2020 |
| Kirsten Engineering Limited | Professional & scientific | 1990 |
| KK Offshore Ltd | Construction | 2025 |
| KKO Estates Limited | Real estate | 2025 |
| Klst Limited | Professional & scientific | 2024 |
| KM Group Scotland Ltd | Manufacturing | 2026 |
| Koko Inc Ltd | Real estate | 2019 |
| Kolachik Properties Ltd | Real estate | 2022 |
| Kongsberg Discovery UK Limited | Manufacturing | 2023 |
| Kongsberg Maritime Limited | Manufacturing | 1987 |
| Kore Technology Solutions Limited | Administrative & support | 2012 |
| Koterra Energy Ltd | Professional & scientific | 2026 |
| Kr&M Consultants Ltd | Professional & scientific | 2022 |
| KW Accounting Limited | Professional & scientific | 2024 |
| KXT Limited | Professional & scientific | 2012 |
| L J Beedie Consultants Limited | Professional & scientific | 2024 |
| LA Controls Limited | Administrative & support | 2007 |
| LA Precision Ltd | Other services | 2022 |
| LAE1 Ltd | Professional & scientific | 2018 |
| Lanapac Ltd | Administrative & support | 2025 |
| Lauranna Limited | Real estate | 2006 |
| Laymax Procurement Ltd | Mining & quarrying | 2023 |
| LCB Beauty Limited | Other services | 2016 |
| LCR Fabrications (NE) Ltd | Construction | 2024 |
| Leadhouse Access Limited | Other services | 2011 |
| Leask Consulting Ltd | Professional & scientific | 2023 |
| Lebap Ltd | Hospitality | 2025 |
| Legasea Ltd | Manufacturing | 2018 |
| Lexicon Engineering Ltd | Professional & scientific | 2006 |
| LFI Creative Ltd | Information & communication | 2003 |
| Lgjd Holdings Ltd | Financial services | 2026 |
| Licecomb Engineering Limited | Manufacturing | 2009 |
| Like Home Ltd | Real estate | 2021 |
| Linconsult UK Ltd | Professional & scientific | 2024 |
| Link Layer Technologies Limited | Information & communication | 2011 |
| Linton Oilfield Limited | Professional & scientific | 2009 |
| Little Hake Hospitality Limited | Hospitality | 2013 |
| LJ Property Maintenance Services Ltd | Construction | 2025 |
| LO Carbon Cars Limited | Wholesale & retail | 2008 |
| Loch Fyne Financial Management Limited | Administrative & support | 2010 |
| Lochpots HSE Leadership Limited | Professional & scientific | 2018 |
| Lockfit Aberdeen Ltd | Manufacturing | 2022 |
| Logan Ecom Ltd | Wholesale & retail | 2026 |
| Logik Image Management Limited | Professional & scientific | 1987 |
| London Ahead Ltd | Extraterritorial | 2025 |
| Loughridge Transformations Ltd | Professional & scientific | 2018 |
| Lows Traditional Ltd | Hospitality | 2016 |
| LPA Scotland Limited | Professional & scientific | 2018 |
| Lucion Radiation Protection Services Ltd | Professional & scientific | 2001 |
| Lumat Ltd. | Professional & scientific | 2007 |
| LUX Lounge 373 Ltd | Other services | 2023 |
| Lydia Wilson Foundation | Other services | 2018 |
| M & D Translation Services Limited | Professional & scientific | 1996 |
| M & J Properties Aberdeen Ltd | Real estate | 2018 |
| M Y Aberdeen Ltd | Hospitality | 2024 |
| Maan ES Ltd | Professional & scientific | 2015 |
| Macandrew Training Ltd. | Professional & scientific | 2021 |
| Macd Property Management Ltd | Real estate | 2022 |
| Macdonald & SON Ltd | Hospitality | 2019 |