| Debuka UK Limited | Manufacturing | 2026 |
| Decc Ltd | Real estate | 2018 |
| Decide Wisely Limited | Professional & scientific | 2017 |
| Decidedly Dogs & More Ltd | Wholesale & retail | 2016 |
| Decipher Energy Ltd | Financial services | 2026 |
| Decknology (Group) Limited | Administrative & support | 2018 |
| Decoded Studio Limited | Professional & scientific | 2015 |
| Decom Advisory Limited | Professional & scientific | 2023 |
| Decommissioning Project Services Limited | Administrative & support | 2009 |
| Decomsea Limited | Professional & scientific | 2023 |
| DEE Accommodations Ltd | Hospitality | 2022 |
| DEE and DON Properties Ltd | Wholesale & retail | 2023 |
| DEE Array Limited | Professional & scientific | 2023 |
| DEE Blinds & Shutters Ltd | Wholesale & retail | 2015 |
| DEE Hotel Aberdeen Ltd | Hospitality | 2018 |
| DEE Property Limited | Real estate | 2002 |
| Dee-Mac Executive Hire Ltd | Transport & logistics | 2021 |
| Deebridge Electrical Engineers Limited | Manufacturing | 1966 |
| Deedee Solutions Limited | Professional & scientific | 2017 |
| Deegala Investments Limited | Professional & scientific | 2001 |
| Deemount Design Ltd. | Professional & scientific | 2017 |
| Deemouth Artist Studios Limited | Arts & recreation | 2019 |
| Deemouth Workshops Ltd | Arts & recreation | 2023 |
| Deenburgh Consultancy Ltd | Information & communication | 2023 |
| Deep Blue OIL & GAS Limited | Professional & scientific | 2019 |
| Deep Colours Car Painting Ltd | Wholesale & retail | 2021 |
| Deep Fryer Ltd | Hospitality | 2019 |
| Deepika Consulting Services Ltd | Professional & scientific | 2022 |
| Deepocean Subsea Services Limited | Construction | 2017 |
| Deepsea Technology Limited | Financial services | 2025 |
| Deepview Consultancy Limited | Professional & scientific | 2012 |
| Deepwind Ventures Ltd | Professional & scientific | 2020 |
| Dees Peri Peri Ltd | Hospitality | 2020 |
| Dees Solutions Limited | Administrative & support | 2013 |
| Deeside Agricultural Association | Arts & recreation | 2003 |
| Deeside Arts Ltd | Professional & scientific | 2026 |
| Deeside Cardiology Ltd | Health & social care | 2025 |
| Deeside Consultancy Limited | Professional & scientific | 2015 |
| Deeside Contracts Holdings Limited | Administrative & support | 2015 |
| Deeside Contracts Limited | Administrative & support | 1997 |
| Deeside Crewing Services Limited | Mining & quarrying | 2004 |
| Deeside Decorators Ltd | Construction | 2024 |
| Deeside Developments (Grampian) Limited | Real estate | 2013 |
| Deeside Energy Services Limited | Professional & scientific | 2025 |
| Deeside Fabrication Limited | Professional & scientific | 2015 |
| Deeside Investments Limited | Professional & scientific | 2010 |
| Deeside Nutrition Limited | Wholesale & retail | 2026 |
| Deeside Plumbing and Heating Ltd | Construction | 2018 |
| Deetodon Consulting Limited | Information & communication | 2025 |
| Deevale Investments Limited | Real estate | 1978 |
| Defenti Ltd | Transport & logistics | 2025 |
| Definition Scotland Ltd | Other services | 2018 |
| Dehsk Subsea Ltd | Professional & scientific | 2014 |
| Deja K Limited | Construction | 2025 |
| Delic Takeaway Ltd | Hospitality | 2024 |
| Delicious House Aberdeen Ltd | Hospitality | 2026 |
| Delirium Band UK Ltd | Information & communication | 2025 |
| Dell of Blairs Farm Partnership | | 2000 |
| Delmar Electrical Ltd | Manufacturing | 2025 |
| Delmar Systems Ltd | Mining & quarrying | 2014 |
| Deltech Integrated Services Ltd | Information & communication | 2023 |
| Delter Ltd | Manufacturing | 2021 |
| Demalfie Livestock Limited | Agriculture & fishing | 2024 |
| Democa Properties Limited | Real estate | 1974 |
| Demon Barbers Ltd | Other services | 2023 |
| DEN in the Glen Ltd | Real estate | 2021 |
| Dena Screen Print Limited | Manufacturing | 2002 |
| Dena Screenprint (Holdings) Limited | Manufacturing | 2017 |
| Denakord Ltd | Mining & quarrying | 2020 |
| Denburn Engineering Limited | Professional & scientific | 2004 |
| Denburn Healthcare Limited | Wholesale & retail | 2024 |
| Denburn Livery | | 1999 |
| Denburn Livery (Aberdeen) Limited | Wholesale & retail | 1999 |
| Denburn Offshore Limited | Professional & scientific | 1993 |
| Denek Ltd | Wholesale & retail | 2022 |
| Denhead Engineering Limited | Professional & scientific | 2023 |
| Denise Tinsley Limited | Other services | 2015 |
| Denmall Limited | Construction | 2017 |
| Denmore 2025 Limited | Hospitality | 2025 |
| Denmore Joinery Ltd | Construction | 2009 |
| Denmore Kitchens Trustees Limited | Administrative & support | 2022 |
| Denmore Limited | Manufacturing | 2014 |
| Denmore Properties Ltd | Real estate | 1990 |
| Denmore Technologies Ltd. | Manufacturing | 2008 |
| Dens Group Limited | Administrative & support | 2024 |
| Densbridge Limited | Real estate | 1997 |
| Densindente Ltd | Health & social care | 2024 |
| Dental Implants Scotland Ltd. | Professional & scientific | 2025 |
| Dental Inspirations Practice Limited | Health & social care | 2010 |
| Dentherapy Limited | Administrative & support | 2013 |
| Denzil Dens Ltd | Real estate | 2025 |
| Denzo Consulting Ltd | Wholesale & retail | 2020 |
| Deot Consulting Ltd | Professional & scientific | 2021 |
| Depala Ltd | Real estate | 2025 |
| Derek Brand Joinery Limited | Construction | 2022 |
| Derek Forbes Logistics Limited | Mining & quarrying | 2007 |
| Derek Mathers Joinery Services Ltd. | Construction | 2010 |
| Derkachov Limited | Construction | 2022 |
| Dermasetuai Ltd | Information & communication | 2026 |
| Derp Educational Limited | Education | 2017 |