| Aberceiro Management Company Limited | Other services | 2015 |
| AJ Laundry Services Ltd | Other services | 2026 |
| Alaw Fory Limited | Real estate | 2003 |
| Anderson Apparel Limited | Manufacturing | 1998 |
| Anna Mair Lloyd Ltd | Extraterritorial | 2023 |
| Anna Mair Lloyd-Adey Ltd | Extraterritorial | 2023 |
| Annedd Ltd | Construction | 2001 |
| Antur Felin CYF | Information & communication | 2026 |
| Arlwyo Lewis CYF | Hospitality | 2022 |
| Art + Science | Arts & recreation | 2016 |
| Articulture C.I.C. | Arts & recreation | 2013 |
| AV745 Techdisplay Limited | Professional & scientific | 2005 |
| Bandit Bikes Ltd | Wholesale & retail | 2025 |
| Bar Foresters Ltd | Hospitality | 2018 |
| Bazz Car Wash Ltd | Administrative & support | 2025 |
| Bespoke Welding Solutions Ltd | Manufacturing | 2026 |
| Best of Hungary Ltd | Wholesale & retail | 2016 |
| Bike Corris Ltd | Administrative & support | 2019 |
| Biosffer Canolbarth Cymru | Other services | 1999 |
| Bowowhause Limited | Wholesale & retail | 2024 |
| Braeshaw Limited | Wholesale & retail | 2022 |
| Breese Gogarth CYF | Hospitality | 2024 |
| BRO Cader Haulage & Plant Ltd | Transport & logistics | 2010 |
| BRO Ddyfi Timber Ltd | Manufacturing | 2024 |
| Bron YR AUR Creative Micronation Ltd | Wholesale & retail | 2025 |
| Bryndan Cyfyngedig | Hospitality | 2019 |
| C J Law Contractors Limited | Construction | 2017 |
| C.A.T. Alternative Technology Trading Ltd | Professional & scientific | 2019 |
| Cader Networks Ltd | Construction | 2024 |
| Caedus Development Ltd | Information & communication | 2022 |
| Canolfan Corris CYF | Hospitality | 1992 |
| Canolfan Cymunedol Derwenlas Community Centre | Arts & recreation | 2012 |
| Canolfan Cynghori BRO Ddyfi Advice Centre | Information & communication | 2005 |
| Canolfan Owain Glyndwr CYF. | Other services | 1998 |
| Canolfan Pennal CYF | Real estate | 2007 |
| Capel Salem Corris Ltd | Manufacturing | 2021 |
| Carol Satterthwaite Literacy Ltd | Education | 2016 |
| Ceiro Properties Limited | Construction | 2018 |
| Celtica CYF | Education | 1996 |
| Ceunant Hydro CYF | Energy | 2014 |
| Cewydd Cottages Ltd | Hospitality | 2018 |
| Chapman Estates (MID Wales) Ltd | Construction | 2025 |
| Clwb IMY CIC | Other services | 2023 |
| Coed Cymru CYF | Agriculture & fishing | 1989 |
| Coed Dyfi Woodlands Ltd | Agriculture & fishing | 2004 |
| Coeden Fawr LLP | | 2021 |
| Coedwig Hydro Limited | Construction | 2013 |
| Cooksista Ltd | Wholesale & retail | 2022 |
| Corris Caverns Limited | Arts & recreation | 1992 |
| Corris Consultants Limited | Information & communication | 1990 |
| Corris Railway Company Limited(The) | Transport & logistics | 1976 |
| Corris Tattoo Locomotive Co. Ltd. | Manufacturing | 1997 |
| Craftedspace Ltd | Professional & scientific | 2009 |
| Creature Cycles Ltd | Manufacturing | 2019 |
| Criw Compostio Ltd | Water & waste | 2024 |
| Crowncare Aborists Limited | Administrative & support | 2026 |
| Culture Colony Limited | Information & communication | 2008 |
| CWM Cadian Hydro Limited | Energy | 2018 |
| Cwmni Caban CYF | Hospitality | 2020 |
| Cwmni Cymunedol Cletwr | Wholesale & retail | 2012 |
| Cwmni EOS Property CYF | Real estate | 2021 |
| D.R.V Trees Ltd | Administrative & support | 2026 |
| David John Holt Ltd | Professional & scientific | 2026 |
| Davies & Evans Limited | Construction | 2003 |
| Days of My Youth Limited | Wholesale & retail | 2020 |
| Dovey Valley Caravan & Camping Park Limited | Construction | 1997 |
| Dovey Valley Motor Club (1995) Limited | Arts & recreation | 1995 |
| Dovey Valley Shooting Ground Ltd | Arts & recreation | 2018 |
| DV Roofing Ltd | Construction | 2025 |
| DWR Maesglas CYF | Energy | 2012 |
| Dyffryn Dulas CIC | Other services | 2025 |
| Dyfi Architecture Ltd | Professional & scientific | 2014 |
| Dyfi Bike Shed Limited | Wholesale & retail | 2026 |
| Dyfi Biomass Ltd | Professional & scientific | 2014 |
| Dyfi Dairy Ltd | Agriculture & fishing | 2024 |
| Dyfi Delights Bakehouse Ltd | Manufacturing | 2025 |
| Dyfi Developments Limited | Professional & scientific | 2016 |
| Dyfi Distillery Ltd | Manufacturing | 2015 |
| Dyfi Fire Limited | Other services | 2025 |
| Dyfi Holdings Ltd | Other services | 2018 |
| Dyfi Kitchens Ltd | Construction | 2023 |
| Dyfi Pet Cremations Limited | Other services | 2024 |
| Dyfi Rivers Trust | Other services | 2025 |
| Dyfi Skips Limited | Water & waste | 2023 |
| Dyfi Valley Forest Retreat Limited | Hospitality | 2018 |
| Dyfi Valley Guides Ltd | Arts & recreation | 2024 |
| Dyfi Valley Homes Limited | Construction | 2022 |
| Dyfi Valley Solar and Electrical Ltd | Construction | 2023 |
| Dyfi Wholefoods Ltd | Wholesale & retail | 2015 |
| Dyfi Wildlife Trust | Other services | 2025 |
| E J Fire Ltd | Construction | 2013 |
| Edward Rhodes Limited | Hospitality | 2011 |
| Elevate Aesthetics Machynlleth Limited | Other services | 2025 |
| Elevé Collective Ltd | Hospitality | 2025 |
| Elsper Ltd | Professional & scientific | 2021 |
| Emerald Albion Ltd | Manufacturing | 2023 |
| ETA (Empathy Through Art) CIC | Professional & scientific | 2026 |
| Evans & Parry Ltd | Wholesale & retail | 2025 |
| Farrenson Technical Consulting Limited | Information & communication | 2025 |
| Fferm Gogarth CYF | Agriculture & fishing | 2025 |