| Cottonandcompany Ltd | Wholesale & retail | 2018 |
| Craigend Properties Limited | Real estate | 2011 |
| Cruz Property Management Ltd | Real estate | 2011 |
| Csmf Property Ltd | Real estate | 2025 |
| Csszg Ltd | Construction | 2025 |
| Cuppers' Union C.I.C. | Other services | 2025 |
| CWB Energy Limited | Professional & scientific | 2006 |
| D & C Smith (Builders) Limited | Construction | 2018 |
| D a Warne Engineering Ltd | Manufacturing | 2021 |
| D Dunlop Limited | Professional & scientific | 2021 |
| D&M Development Group Ltd | Construction | 2025 |
| D.Lams Wrenchworks Auto Care Ltd | Professional & scientific | 2025 |
| D.W.Murray Trading Limited | Wholesale & retail | 2014 |
| Dahl Group Limited | Real estate | 2023 |
| Daisy's Future Ltd | Agriculture & fishing | 2023 |
| Dalglen (NO. 17723) Limited | Professional & scientific | 2009 |
| Dana Development Consultants Limited | Real estate | 2018 |
| David Craig Property Works Limited | Construction | 2017 |
| David Mccreadie 3D Measuring and Modelling Ltd | Professional & scientific | 2015 |
| Dbdevco | | 2017 |
| Dcave Ltd | Professional & scientific | 2018 |
| Detox International Ltd | Health & social care | 2006 |
| DGC Trading Limited | Hospitality | 2014 |
| Dilworth Property Ltd | Real estate | 2025 |
| Dogs by Leigh Ltd | Other services | 2022 |
| Douglas Reid's Garage Limited | Wholesale & retail | 2013 |
| DRY Fusion Scotland Limited | Administrative & support | 2018 |
| DTK Beverages International Limited | Wholesale & retail | 2024 |
| Dukes Cafe Limited | Hospitality | 2023 |
| Dukes Creative Learning Limited | Education | 2025 |
| Dukes Fine Art Limited | Wholesale & retail | 2023 |
| Dunbar Adventures Ltd | Administrative & support | 2024 |
| Dunbar Childcare Limited | Education | 2016 |
| Dunbar Community Development and Heritage Trust | Arts & recreation | 1998 |
| Dunbar Container Storage Ltd | Transport & logistics | 2019 |
| Dunbar Drinks Company Limited | Manufacturing | 2014 |
| Dunbar Golf Club Limited | Arts & recreation | 2014 |
| Dunbar Harbour Trust | Other services | 1999 |
| Dunbar Nails & Spa Ltd | Other services | 2025 |
| Dunbar Picture Framing Ltd | Manufacturing | 2021 |
| Dunbar Private Nursery Ltd | Health & social care | 2022 |
| Dunbar Rock Investments Ltd | Real estate | 2017 |
| Dunbar Spice Limited | Hospitality | 2017 |
| Dunbar T-Shirt Shop Ltd | Wholesale & retail | 2011 |
| Dunbar United Football Club CIC | Arts & recreation | 2021 |
| East Coast Coaching Limited | Education | 2020 |
| East Links Enterprises Limited | Arts & recreation | 2001 |
| East Lothian Counselling & Therapy Ltd | Health & social care | 2021 |
| East Lothian Newlands Hill Ltd | Energy | 2024 |
| East Lothian Plant Services Ltd | Manufacturing | 2025 |
| East Lothian Sea Fishing Ltd | Transport & logistics | 2010 |
| Ebba Strand Property Limited | Construction | 2025 |
| Eco Indigo Limited | Agriculture & fishing | 2017 |
| Ecosse XC | Arts & recreation | 2016 |
| Edinburgh & Glasgow Investment Company Limited | Real estate | 2008 |
| EJM Property Ltd | Real estate | 2014 |
| Emma James Hair Ltd | Other services | 2025 |
| European Land Art Festivals CIC | Arts & recreation | 2023 |
| EVE Coaches Ltd. | Transport & logistics | 2002 |
| Fairtee Limited | Information & communication | 2021 |
| FAR Features Ltd | Professional & scientific | 2016 |
| FAR Universal Limited | Professional & scientific | 2025 |
| Fasque Events Ltd | Hospitality | 2024 |
| Fasque Limited | Hospitality | 2024 |
| Filor Storage Systems Limited | Manufacturing | 2011 |
| Flytingfilms Limited | Professional & scientific | 2025 |
| G&L Property Management EST 2024 Ltd | Households | 2024 |
| GALLERY27 Limited | Wholesale & retail | 2019 |
| GAUGE1508 Ltd | Construction | 2026 |
| GDP 1 Limited | Information & communication | 2012 |
| Georgia MAY Fashion Ltd | Wholesale & retail | 2023 |
| GET the Point Ltd. | Information & communication | 2006 |
| GGE Properties Ltd | Real estate | 2023 |
| Gges Group Ltd | Financial services | 2024 |
| Gilphil Limited | Construction | 2024 |
| Gilstorm Ltd | Real estate | 2020 |
| Girdwood Exterior Cleaning Ltd | Administrative & support | 2023 |
| Go Train East Rocks Limited | Arts & recreation | 2015 |
| Gold Badger Limited | Other services | 2024 |
| Goldfinch Construction Limited | Construction | 2017 |
| Goldroman Limited | Financial services | 2000 |
| Gorpam Limited | Other services | 2021 |
| Graeme Renton Farming Limited | Agriculture & fishing | 2006 |
| Granite City Developments LLP | | 2019 |
| Grant Chisholm Installations Limited | Construction | 2020 |
| Grenzo Consulting Ltd | Professional & scientific | 2026 |
| H H Enterprises | | 1985 |
| Haddington Hire Centre Limited | Administrative & support | 2015 |
| Hallhill Limited | Arts & recreation | 2011 |
| Happy Palace Dunbar Ltd | Hospitality | 2024 |
| Harvest Moon Holidays Ltd. | Hospitality | 2010 |
| Hawk Pro Industry Ltd | Wholesale & retail | 2022 |
| HBJ 452 Limited | Professional & scientific | 1999 |
| Hillside Hotel (Dunbar) Limited | Hospitality | 2014 |
| Hippotrix Ltd | Extraterritorial | 2012 |
| Hometown Coffee Ltd | Wholesale & retail | 2023 |
| ICI Steel Fabricators Limited | Construction | 2014 |
| INCUB8 Consulting Limited | Professional & scientific | 2025 |
| Inferno Installations Ltd | Construction | 2025 |
| Inspire 42 Ltd | Other services | 2023 |