| A & M Lloyd Plant Hire Limited | Administrative & support | 2009 |
| ADI Extra Services Ltd | Construction | 2021 |
| Adrenalin Addicts Ltd | Arts & recreation | 2023 |
| Aero-Lit 37 CYF | Administrative & support | 2018 |
| Afon Rhaiadr Limited | Hospitality | 2014 |
| Afterimagery Ltd | Professional & scientific | 2026 |
| Alan Woodbridge Limited | Professional & scientific | 2003 |
| Amarylis Limited | Hospitality | 2011 |
| Ambella Designs Ltd | Financial services | 2024 |
| Arloesi Dolgellau Cwmni Buddiant Cymunedol | Education | 2024 |
| Asiantaeth Riff Agency CYF | Arts & recreation | 2025 |
| Awen Weave Limited | Information & communication | 2026 |
| Benrhos Limited | Professional & scientific | 2010 |
| Best BE Comfortable Club Limited | Information & communication | 2009 |
| Bryniau Brithdir Management Company Limited | Households | 2009 |
| Burgate Lewis Construction Ltd | Construction | 2007 |
| Bwrlwm CYF | Arts & recreation | 1996 |
| Cader Kitchens Ltd | Wholesale & retail | 2016 |
| Cader Plant Hire Ltd | Administrative & support | 2022 |
| Cader Storage Limited | Administrative & support | 2025 |
| Canna Llewelyn CYF | Real estate | 2021 |
| Canolfan Deulu Dolgellau CYF | Education | 2013 |
| Celtic Contract Services Limited | Construction | 2001 |
| Chatter Telecommunications Ltd | Information & communication | 2017 |
| Cilfan C.I.C. | Health & social care | 2025 |
| Civil Engineering Solutions Limited | Professional & scientific | 2004 |
| Clives Retail Limited | Wholesale & retail | 2026 |
| Clogau Motors Ltd | Wholesale & retail | 2012 |
| Clwb Rygbi Dolgellau CYF | Arts & recreation | 2015 |
| Clywynni Cyfyngedig | Energy | 2015 |
| Coed Cabins Ltd | Hospitality | 2017 |
| Coed Penmaenucha LLP | | 2025 |
| Coed Penmaenuchaf Ltd | Agriculture & fishing | 2018 |
| Credis Limited | Administrative & support | 2007 |
| Cross Foxes Dolgellau Ltd | Hospitality | 2019 |
| Cultzilla Ltd | Administrative & support | 2020 |
| CWT Gwyn CYF | Wholesale & retail | 2009 |
| CYB Property Management Limited | Households | 2021 |
| Cyfryngau Cymru CYF | Information & communication | 2018 |
| D.Williams Forestry Limited | Agriculture & fishing | 2010 |
| Dadlen CYF | Other services | 2005 |
| Dd's Bakery and Sandwich Bar Limited | Manufacturing | 2019 |
| Deep Retreats UK Ltd | Other services | 2024 |
| Denby Arron Transport Limited | Transport & logistics | 2000 |
| Dermwise Clinics Limited | Other services | 2022 |
| Derw Construction Ltd | Construction | 2010 |
| DEV Team Solutions Limited | Information & communication | 2015 |
| Dipsy Dragon CYF | Education | 2017 |
| DIU and SU Ltd | Hospitality | 2014 |
| DJE Trading Limited | Wholesale & retail | 2025 |
| Dolcynafon Hydro CYF | Energy | 2018 |
| Doldrum Escape Project C.I.C. | Information & communication | 2024 |
| Dolgamedd CYF | Hospitality | 2009 |
| Dolgellau Allotment Community CIC | Agriculture & fishing | 2023 |
| Dolgellau Community Radio CIC | Information & communication | 2025 |
| Dolgellau Energy Cwmni Buddiant Cymunedol | Energy | 2023 |
| Dolgellau Launderette Ltd | Other services | 2025 |
| Draw Brighton Limited | Arts & recreation | 2019 |
| Dysynni Developments Ltd | Construction | 2021 |
| Eakin Macdonald & Associates Limited | Financial services | 1999 |
| Eakin Macdonald (Project Management) Limited | Real estate | 2000 |
| Edwards Cefn Braich CYF | Construction | 2014 |
| EE33 Motorsport Limited | Arts & recreation | 2023 |
| EHS Contracting Ltd | Manufacturing | 2023 |
| EHS Properties Group Ltd | Real estate | 2025 |
| Eleanor Davies Optometrist Limited | Health & social care | 2009 |
| Elin HAF Davies Ltd | Health & social care | 2013 |
| Essential Solutions Services Ltd | Information & communication | 2023 |
| Floodplan Limited | Professional & scientific | 2020 |
| Food Business Assistance Limited Liability Partnership | | 2008 |
| Fulfilpotential Ltd | Health & social care | 2020 |
| Fwag Cymru CYF | Information & communication | 2011 |
| Garn Land Ltd | Agriculture & fishing | 2009 |
| GLH Scaffolding CYF | Construction | 2021 |
| Gmow (Operations) Limited | Mining & quarrying | 2010 |
| Golden Lion (Dolgellau) Flat Management Company Limited | Real estate | 2005 |
| Green Monkey AV Ltd | Wholesale & retail | 2002 |
| Greener Vision Solutions Ltd | Wholesale & retail | 2026 |
| GSD Trydanwyr CYF | Construction | 2024 |
| Gwanas Cyfyngedig | Professional & scientific | 2003 |
| Gwasanaethau Adeiladu Gwyrdd CYF | Construction | 2022 |
| Gwyn Williams Contracting Ltd | Other services | 2025 |
| Gwyndaf Evans Motors Ltd | Manufacturing | 2012 |
| H B Davenport Ltd | Agriculture & fishing | 2013 |
| Harry Seymour & Associates Limited | Professional & scientific | 1991 |
| Hause of CC Limited | Other services | 2024 |
| Heather Mountain Holidays Ltd | Hospitality | 2024 |
| Hendre Garage Limited | Wholesale & retail | 2023 |
| Hesgen Hydro CYF | Energy | 2015 |
| Hevac Design Solutions Limited | Construction | 2017 |
| HT Drainage Consultancy Ltd | Professional & scientific | 2024 |
| Hufenfa Storage Ltd | Real estate | 2014 |
| Hunky Dory Vintage Ltd | Wholesale & retail | 2023 |
| Hyybab Limited | Professional & scientific | 2020 |
| Innomark Ltd | Hospitality | 2019 |
| J S Jones IFA Limited | Financial services | 2006 |
| JGS Electrical Solutions Ltd | Construction | 2013 |
| JP & Sons Limited Liability Partnership | | 2019 |
| JWO Ltd | Real estate | 2021 |
| KAP 3 Consultancy Ltd | Professional & scientific | 2024 |