| IAN HAY Haulage Ltd. | Transport & logistics | 2006 |
| IAN Wood Audio Limited | Arts & recreation | 2006 |
| Independent Oilfield Inspection Limited | Mining & quarrying | 1993 |
| Infrabra LP | | 2015 |
| Innes Transport Limited | Extraterritorial | 2008 |
| Integrated Marine Solutions Limited | Professional & scientific | 2000 |
| International Paper Equipment Finance LP | | 2000 |
| Inverernan Estates Limited | Real estate | 2013 |
| Inverquhomery Farm Limited | Agriculture & fishing | 1995 |
| Inverquhomery Properties Limited | Construction | 2007 |
| Inverugie Mains Limited | Agriculture & fishing | 1950 |
| Inverurie Pre-Cast Limited | Manufacturing | 1995 |
| Istrada Limited | Hospitality | 2005 |
| Iyappaa Food Industries UK Ltd | Wholesale & retail | 2024 |
| J & J Buchan Ltd. | Other services | 2001 |
| J & M Wilson & Co | | 1990 |
| J & S Garrioch Limited | Agriculture & fishing | 2022 |
| J & W Thomson Limited | Construction | 2004 |
| J Allardyce & Grampian Regional Council | | 1990 |
| J C Hydraulics Ltd | Professional & scientific | 2007 |
| J D Accountancy Ltd. | Professional & scientific | 2002 |
| J H Milne (Peterhead) Limited | Manufacturing | 1997 |
| J M & C F Donald | | 1977 |
| J. & G. Riddell Limited | Administrative & support | 1999 |
| J. Douglas Fowlie Limited | Agriculture & fishing | 1995 |
| James and George Collie Financial Management Limited | Financial services | 2003 |
| James Duffus | Agriculture & fishing | 1983 |
| James F Gillanders | Agriculture & fishing | 1985 |
| James F. Donald (Aberdeen Cinemas) Limited | Real estate | 1927 |
| James Fisher Offshore Limited | Other services | 1987 |
| James Moir & Sons Limited | Manufacturing | 1997 |
| JAP Consultants Limited | Real estate | 2002 |
| Jason Mackland Limited | Construction | 2004 |
| Jayce Construction Limited | Construction | 1997 |
| Jeffrey Consulting Services Limited | Professional & scientific | 2003 |
| JEM Fishing Limited | Agriculture & fishing | 2007 |
| Jenni Limited | Professional & scientific | 2003 |
| Jennifer Wishart Associates Ltd | Other services | 2011 |
| Jilona Limited | Real estate | 1999 |
| JIM Urquhart Commercial Repairs Limited | Wholesale & retail | 2003 |
| JIM Young Lifting Services Limited | Professional & scientific | 2025 |
| JKB (UK) Ltd. | Hospitality | 1992 |
| JKL Technology Ltd. | Manufacturing | 2006 |
| Jkriss Ltd | Real estate | 2020 |
| John B. Mcintosh (Waulkmill) | | 2001 |
| John Bell & Sons (Farmers) Limited | Agriculture & fishing | 1961 |
| John G Baird Limited | Construction | 2006 |
| John Mckechnie & Co | | 1987 |
| John Park Jeweller Ltd | Wholesale & retail | 2003 |
| JOM Ltd | Manufacturing | 2023 |
| JSM Smallholding Limited | Administrative & support | 2022 |
| Kairdson Tyres Limited | Wholesale & retail | 1974 |
| Kaleen Fishing Company Limited | Agriculture & fishing | 2002 |
| Katanes Investments Limited | Financial services | 2024 |
| Kemnay Autobody Limited | Wholesale & retail | 2003 |
| KEN Morrison Construction Limited | Construction | 2007 |
| Kevin Gordon Ltd. | Construction | 2005 |
| Kevin M Stuart Electrical Ltd | Construction | 2008 |
| Kffg Aberdeen Ltd | Professional & scientific | 2017 |
| Kimberley Solutions Limited | Mining & quarrying | 2005 |
| Kincraigie Farms | | 1987 |
| Kinmuck Energy Limited | Energy | 2020 |
| Kinmundy Developments Ltd. | Real estate | 2006 |
| Kirdana Ltd. | Agriculture & fishing | 2006 |
| Kirkhill Geosciences Limited | Professional & scientific | 2007 |
| Kirkton Farmers | | 2002 |
| Kitchen Transformation Services Ltd. | Construction | 2006 |
| KND Engineering Limited | Manufacturing | 2006 |
| Knockothie Farms | Agriculture & fishing | 2000 |
| Kynoch & Robertson Limited | Construction | 2003 |
| LA Taverne Ltd | Hospitality | 2024 |
| Laingseat Farm | | 1987 |
| Lamont Sporrans Limited | Wholesale & retail | 2003 |
| Langstane Press Limited | Wholesale & retail | 1977 |
| Laser Projects Limited | Wholesale & retail | 2022 |
| Laurie & Co Solicitors LLP | | 2007 |
| Lecht SKI Company Limited | Arts & recreation | 1977 |
| Lecht SKI School Limited | Arts & recreation | 1986 |
| Ledmacoy Farms | | 1991 |
| Linton Partnership 2000 | | 2006 |
| List-Itt Limited | Information & communication | 2024 |
| Lister Domestic Appliance Engineers Ltd. | Manufacturing | 2002 |
| Little Belmont Street Trading Company Limited | Real estate | 1988 |
| Little Drops Charity Trust | Health & social care | 1998 |
| Living the Dream Travel Ltd | Administrative & support | 2017 |
| LKE Developments Limited | Administrative & support | 2004 |
| LM Mechanical Solutions Ltd | Professional & scientific | 2013 |
| Lochheap Croft | | 1988 |
| Loopwise Engineers Ltd. | Professional & scientific | 2006 |
| Lufkin Industries Finance Scotland LP | | 2012 |
| Lupus Engineering Services Limited | Agriculture & fishing | 2000 |
| Lyne of Skene Farm Partnership | | 1999 |
| Lynturk Home Farm | | 1992 |
| Lynturk Home Farm | | 1998 |
| Lynx Enterprises Limited | Professional & scientific | 1996 |
| Lyon-Milton Partnership | | 1987 |
| M D Technical Solutions Ltd. | Professional & scientific | 2006 |
| M Gordon and Grampian Regional Council | | 1990 |
| M&R Technoservice 22 Ltd | Information & communication | 2025 |
| M.A.R.S.S Projects Limited | Construction | 2023 |