| 4MS Network Solutions Limited | Information & communication | 2007 |
| A & E Zanre Ltd. | Construction | 2005 |
| A & J Adams | | 1999 |
| A & J Investments (Scotland) Ltd. | Real estate | 2003 |
| A & L Gibson Limited | Agriculture & fishing | 2003 |
| A R D Kitchens & Bathrooms Ltd. | Wholesale & retail | 2006 |
| A R D Properties Limited | Construction | 1999 |
| A. C. & J. M. Munro | | 1990 |
| A. Milton & Partner | | 1993 |
| A.J. Duncan | | 1993 |
| Aberdeen & Northern (Estates) Limited | Real estate | 1986 |
| Aberdeen Citizens Advice Bureau | Information & communication | 1990 |
| Aberdeen Harbour Services Limited | Transport & logistics | 1989 |
| Acgk Limited | Agriculture & fishing | 2006 |
| ACS Engineering Limited | Hospitality | 2007 |
| Adroit Software Solutions Limited | Wholesale & retail | 2008 |
| Afresco Limited | Hospitality | 2006 |
| AGH Contracting Limited | Professional & scientific | 2006 |
| Agricultural and Ironmongery Supplies Limited | Professional & scientific | 2003 |
| Agricultural Finance Bureau Limited | Extraterritorial | 1994 |
| Air Scan Ltd | Wholesale & retail | 2003 |
| Airway Pigs Limited Partnership | | 2001 |
| AJD Consultancy Services Limited | Professional & scientific | 2003 |
| Aksis U.K. Limited | Wholesale & retail | 2006 |
| Alan Cruickshank Ltd. | Construction | 2003 |
| Alan Donald Limited | Construction | 2005 |
| Alan O'Brien (Auchravie) Farming 1984 | | 1985 |
| Alexander DEY Limited | | 1952 |
| Alexander Duncan (Aberdeen) Limited | Manufacturing | 1961 |
| Alexander Duthie & Sons Limited | Construction | 1988 |
| Alexander Engineering Services Ltd. | Mining & quarrying | 2007 |
| Allan C Morrison Farmer | | 1988 |
| Allan Farms | | 1995 |
| Allan Leggat (Callies) Farming 1984 | | 1984 |
| Allardyce Highland Cattle | | 1992 |
| Allochy Limited | Administrative & support | 2002 |
| Alpha BIO Systems Limited | Professional & scientific | 1994 |
| Alpha Business Services Limited | Professional & scientific | 2003 |
| Alpha Fencing Limited | Construction | 2000 |
| Alset Digital and AI Solutions Ltd | Professional & scientific | 2025 |
| Altesse Imperiale Ltd | Real estate | 2025 |
| ALX Fishing Ltd. | Agriculture & fishing | 2006 |
| Ambassador Project Services Limited | Professional & scientific | 2000 |
| Amteq E & I Services Limited | Manufacturing | 2005 |
| ANC Engineering Services Ltd. | Professional & scientific | 2007 |
| ANM Maverston Limited | Administrative & support | 2025 |
| Aramor Ltd. | Agriculture & fishing | 2003 |
| ARD Control Limited | Professional & scientific | 2007 |
| Ardhuncart Farm | | 1991 |
| Ardoyne Consultants Limited | Professional & scientific | 2007 |
| Ardoyne Investments Limited | Professional & scientific | 2007 |
| Ardoyne Performance Limited | Arts & recreation | 2006 |
| ASL Investments Limited | Real estate | 2007 |
| Assured Heritable Properties 1990/1991 Limited | Professional & scientific | 1990 |
| Avochie Home Farm Partnership | | 1989 |
| Aware Investments LP | | 2021 |
| Aww.Co.Uk Limited | Professional & scientific | 2000 |
| B & K Hesp Ltd | Professional & scientific | 2007 |
| B Grubb and Grampian Regional Council | | 1992 |
| Balaclava Bar Limited | Hospitality | 2002 |
| Balmedie Fish & Chip Shop Limited | Hospitality | 2002 |
| Balnamoon Properties and Developments Limited | Real estate | 2006 |
| Baxters Mobility Centre Ltd. | Manufacturing | 2002 |
| BEE Commerce (Scotland) Limited | Wholesale & retail | 2019 |
| Belniden Farms | | 1991 |
| Benzies Produce Ltd. | Administrative & support | 2010 |
| Berry's of Oldmeldrum | Wholesale & retail | 2003 |
| Bilbo Farm (1992) | | 1992 |
| Bilbo Farming | | 1994 |
| Billy Thom Plant Hire Limited | Construction | 2006 |
| Birchwood Hill Consultants Limited | Professional & scientific | 2011 |
| Blachrie Farm Partnership (1989) | | 1989 |
| Black and Scot | Information & communication | 2021 |
| Blue Bonnet Assets Ltd. | Professional & scientific | 2004 |
| BNW (Scotland) Limited | Manufacturing | 2000 |
| Boddomend Partnership | | 1988 |
| Bogend Partnership(The) | | 1988 |
| Bogenraith Equestrian Limited | Arts & recreation | 2018 |
| Bogenraith Farm & Estates Limited | Agriculture & fishing | 2018 |
| Bogfern Farm Partnership | | 1999 |
| Booth-Milton Partnerships | | 1987 |
| Borealis Software Ltd | Professional & scientific | 2007 |
| Braco Farm Ltd. | Agriculture & fishing | 2004 |
| Braco Farms | | 1990 |
| Brafree LP | | 2015 |
| Bridge of DON Garage Limited | Wholesale & retail | 2005 |
| British and Foreign Trust Limited | Professional & scientific | 1900 |
| Broadshade Limited Partnership | | 1999 |
| Brownhill Farms | | 1988 |
| Bruce Mackie & Co | | 1995 |
| Bruce Plant Limited | Mining & quarrying | 2000 |
| Bruce Q.P. Limited | Administrative & support | 2000 |
| BSA Energy Limited | Administrative & support | 2021 |
| Buchan Corporate Activities Ltd. | Arts & recreation | 2003 |
| Buchan Trawlers Limited | Extraterritorial | 1999 |
| Burnfield Farming Partnership | | 1998 |
| Burnside Homes Limited | Real estate | 2002 |
| Burnside of Gourdas Farming Partnership | | 1996 |
| Butterworth Studios Limited | Information & communication | 2004 |
| C | | 1987 |