| 3 & 4 Marine Parade Management Limited | Real estate | 2016 |
| Aberdyfi HCH Ltd | Administrative & support | 2025 |
| AD Fontes Design Ltd | Professional & scientific | 2019 |
| Adventure Travel Ltd | Hospitality | 1996 |
| AJ Cleaning Services MID Wales Ltd | Administrative & support | 2025 |
| Alexandra Tywyn Limited | Health & social care | 2022 |
| Alwena Jones and Bright Ltd | Professional & scientific | 2022 |
| Angood Ltd | Professional & scientific | 2018 |
| ASP Capital & Properties Ltd | Real estate | 2025 |
| B52 Bomber Ltd | Wholesale & retail | 2026 |
| Blake GAS Services Ltd | Construction | 2024 |
| Blind Samurai Films Limited | Arts & recreation | 2004 |
| Bryn Y MOR Leisure Limited | Hospitality | 2022 |
| Brynacres Leisure Limited | Financial services | 2022 |
| Brynmair Management Company (Tywyn) Limited | Households | 2006 |
| Cadair Bikes Limited | Manufacturing | 2023 |
| Cambrian Games Ltd | Wholesale & retail | 2026 |
| Catherine Watkin Consultancy Ltd | Professional & scientific | 2024 |
| Celtic Carpets Limited | Wholesale & retail | 2006 |
| CHC Waste Facilities Management Limited | Administrative & support | 2005 |
| Chesworth Properties Limited | Real estate | 2008 |
| Circlenet Media Limited | Information & communication | 2009 |
| Cook & Sons Estates Limited | Wholesale & retail | 2004 |
| Critchley Training and Consulting Ltd | Professional & scientific | 2020 |
| D B Carpentry & Building Ltd | Construction | 2017 |
| Dine India Cuisine Limited | Hospitality | 2013 |
| Dolphin Tywyn Limited | Households | 1981 |
| Doodle Dandy Ltd | Wholesale & retail | 2024 |
| Draigard Ltd | Information & communication | 2025 |
| E&F Pearce Properties CYF | Real estate | 2025 |
| Elfed Evans & Co Ltd | Agriculture & fishing | 2013 |
| Fc&E Ltd | Real estate | 2024 |
| Genesis Uk.Com EOT Ltd | Professional & scientific | 2023 |
| GEO Smart Decisions Limited | Professional & scientific | 2011 |
| Gesail CYF | Agriculture & fishing | 2022 |
| Great Little Trains of Wales Ltd | Transport & logistics | 2019 |
| Gwernol Agri Services Ltd | Agriculture & fishing | 2019 |
| Gwynedd Traders Ltd | Wholesale & retail | 2025 |
| Hammond Galleries Limited | Professional & scientific | 2019 |
| Harbour Kitchen Limited | Hospitality | 2024 |
| HCH Laundry Ltd | Administrative & support | 2024 |
| Head Outdoors Ltd | Hospitality | 2019 |
| Hutchfolk Hospitality Limited | Hospitality | 2023 |
| I S T Trading Limited | Real estate | 2021 |
| IAN Jewell Property Ltd | Construction | 2018 |
| Imblefield Farms Limited | Administrative & support | 1976 |
| Indiana Cuisine Limited | Hospitality | 2007 |
| Inside OUT (Europe) Ltd | Other services | 2019 |
| ISC Rolling Stock Ltd | Manufacturing | 2022 |
| J and K Parkin Ltd | Professional & scientific | 2021 |
| Jeffs Estates Ltd | Real estate | 2022 |
| Jeffs Group Ltd | Financial services | 2020 |
| JMW Learning Consultants Limited | Education | 2024 |
| Joshua and Stone Limited | Manufacturing | 2015 |
| JS Logistics Ltd | Transport & logistics | 2026 |
| Jupiter Commercial and Property Limited | Real estate | 2026 |
| Karl Eynon Books Limited | Wholesale & retail | 2006 |
| Kerlasam Development Ltd | Construction | 2022 |
| Kesway Properties Limited | Real estate | 2025 |
| Kesway Services Limited | Construction | 2021 |
| Kingsford Holiday Camp Holdings Limited | Financial services | 2022 |
| Laburnum Farm Limited | Agriculture & fishing | 2010 |
| Leahurst Caravan Park Limited | Hospitality | 2009 |
| Lewis Baker Limited | Professional & scientific | 2002 |
| Lightwood Trade Ltd | Financial services | 2024 |
| Little Patch of Heaven Ltd | Construction | 2025 |
| LKD Atebion Ltd | Professional & scientific | 2025 |
| Llanllwyda CYF | Agriculture & fishing | 2012 |
| Llwyn Derw Caravan Park Ltd | Hospitality | 2013 |
| Loughlin Investments Limited | Real estate | 1964 |
| Lounge Holidays Ltd | Hospitality | 2020 |
| Lucinda Property Holdings Ltd | Real estate | 2024 |
| Maes Newydd Management Company Limited | Households | 2013 |
| Magari CYF | Wholesale & retail | 2021 |
| Manna Leisure Limited | Hospitality | 2003 |
| Marine Parade Management Company (Tywyn) Limited | Professional & scientific | 2003 |
| Mentave Media Ltd | Professional & scientific | 2025 |
| Micah Environmental Ltd | Professional & scientific | 2013 |
| Middleton Glass Gwynedd Limited | Wholesale & retail | 2014 |
| Midwales Property Centre Ltd | Households | 2026 |
| Modurol Dyfi Ltd | Wholesale & retail | 2025 |
| Monfa Guest House LP | | 2011 |
| MOR (Tywyn) Ltd | Hospitality | 2020 |
| Morawel LL36 Ltd | Wholesale & retail | 2023 |
| Musiqal Tutors Ltd | Education | 2018 |
| My Infrastructure Advisor Limited | Professional & scientific | 2026 |
| My Place to Stay Ltd | Hospitality | 2022 |
| Nant Cildydd CYF | Energy | 2015 |
| Parc Ynysymaengwyn CYF | Hospitality | 2020 |
| Paul Chesworth Builders Limited | Construction | 2021 |
| Peckish 05 Ltd | Hospitality | 2026 |
| Peckish Kebab & Pizza Ltd | Hospitality | 2019 |
| Pink Pizza Club Ltd | Hospitality | 2025 |
| Property From the Heart Ltd | Real estate | 2021 |
| RAG Trading Limited | Wholesale & retail | 2022 |
| RD Development Limited | Construction | 2013 |
| Readsow Limited | Information & communication | 2020 |
| Real Publications Limited | Information & communication | 1998 |
| Resurrection Motorsport LP | | 2015 |
| Riverside House Hospitality Ltd | Hospitality | 2025 |