| Lairds Kitchens Ltd CRO 800465 · Raphoe | Raphoe | 31 Oct 2025 |
| McNamee Window Systems Ltd CRO 797005 · Castlefinn | Castlefinn | 10 Sep 2025 |
| Fomhar an Tatlantach Ltd CRO 784308 · Burtonport | Burtonport | 19 Mar 2025 |
| Sports Exhausts Ltd CRO 767615 · Letterkenny | Letterkenny | 11 Jul 2024 |
| Coastal Mobiles Ireland Ltd CRO 760450 · Letterkenny | Letterkenny | 22 Mar 2024 |
| Arranmore Ferry Maintenance Ltd CRO 740442 · Arranmore Island | Arranmore Island | 5 May 2023 |
| Doorteck Roller Doors Ltd CRO 732388 · Kilmacrennan | Kilmacrennan | 3 Jan 2023 |
| Donegal Print Supplies Ltd CRO 717378 · Frosses | Frosses | 12 Apr 2022 |
| Ulster Mead Ltd CRO 698032 | — | 15 Jun 2021 |
| Stewarts Garage Ltd CRO 697664 · Carndonagh | Carndonagh | 10 Jun 2021 |
| Inishowen Celtic Iron Ltd CRO 696289 · Carndonagh | Carndonagh | 24 May 2021 |
| Ballyheerin Sport Horses Ltd CRO 686473 · Fanad | Fanad | 25 Jan 2021 |
| Donegal Shepherd Huts Ltd CRO 676551 · Moville | Moville | 27 Aug 2020 |
| Henry MC Ginley & Company Ltd CRO 675202 · Milford | Milford | 7 Aug 2020 |
| Carol Conaghan Ltd CRO 661237 · Killybegs | Killybegs | 22 Nov 2019 |
| CBM Signs Ltd CRO 643140 · Letterkenny | Letterkenny | 7 Feb 2019 |
| Naturelle Consumer Products (Ireland) Ltd CRO 642015 · Lifford | Lifford | 24 Jan 2019 |
| Inishowen Farm Innovations CLG CRO 638157 | — | 22 Nov 2018 |
| Carol's Stock Market Ltd CRO 612583 | — | 2 Oct 2017 |
| Donegal Soap Ltd CRO 603497 · Glenties | Glenties | 3 May 2017 |
| Iconic Bronze Ltd CRO 599904 · Bundoran | Bundoran | 7 Mar 2017 |
| Herbakko Ltd CRO 598896 · Ballyshannon | Ballyshannon | 21 Feb 2017 |
| Donegal Glass & Glazing Manufacturers Ltd CRO 582702 | — | 18 May 2016 |
| Cavern Design Ltd CRO 581646 | — | 3 May 2016 |
| Forker Blinds Ltd CRO 580247 · Letterkenny | Letterkenny | 7 Apr 2016 |
| The Veneerist Ltd CRO 568064 · Fintown | Fintown | 14 Sep 2015 |
| Driogairí Shliabh Liag Cuideachta Ghníomhaíochta Ainmnithe CRO 552979 · Carrick | Carrick | 24 Nov 2014 |
| Erne Digital Print Ltd CRO 526885 · Ballyshannon | Ballyshannon | 30 Apr 2013 |
| Kinnegar Brewing Ltd CRO 518143 · Rathmullan | Rathmullan | 26 Sep 2012 |
| Diaga Ltd CRO 516475 · Buncrana | Buncrana | 15 Aug 2012 |
| Donegal Rapeseed Oil Ltd CRO 515717 · Raphoe | Raphoe | 23 Jul 2012 |
| Molloy & Sons Weaving Ltd CRO 498488 · Ardara | Ardara | 9 May 2011 |
| Filligans Ltd CRO 494733 · Glenties | Glenties | 8 Feb 2011 |
| Donegal Brewing Company Ltd CRO 482738 · Ballyshannon | Ballyshannon | 31 Mar 2010 |
| Cross Concrete Flooring (Ireland) Ltd CRO 443319 · Bridgend | Bridgend | 17 Jul 2007 |
| Ward Stone Ltd CRO 432592 · Carndonagh | Carndonagh | 8 Jan 2007 |
| M McGroarty Monumental Sculptor Ltd CRO 424904 · Mountcharles | Mountcharles | 15 Aug 2006 |
| Diorite Ireland Ltd CRO 412936 · Buncrana | Buncrana | 21 Dec 2005 |
| Paul James Furniture Ltd CRO 383963 · Lifford | Lifford | 30 Mar 2004 |
| Comet Textile Printers Ltd CRO 364639 · Burnfoot | Burnfoot | 4 Dec 2002 |
| Supermix Concrete Ltd CRO 327280 · Lifford | Lifford | 27 Apr 2000 |
| M.R. Concrete (Ireland) Ltd CRO 320169 · Buncrana | Buncrana | 8 Feb 2000 |
| Keown Carpeting & Flooring Ltd CRO 279656 · Ballyshannon | Ballyshannon | 2 Feb 1998 |
| Meehan's Carpet Centre Ltd CRO 278630 · Mountcharles | Mountcharles | 14 Jan 1998 |
| Patrick Gallagher (Churchill) Ltd CRO 239764 · Letterkenny | Letterkenny | 18 Oct 1995 |
| Edel Macbride Ltd CRO 170375 · Ballybofey | Ballybofey | 21 Feb 1991 |
| Swilly Print Ltd CRO 166256 · Buncrana | Buncrana | 8 Nov 1990 |
| Browne (Printers) Ltd CRO 160758 · Letterkenny | Letterkenny | 19 Jun 1990 |
| Magee Weaving Ltd CRO 73229 | — | 21 Jan 1980 |
| Donegal Oil Company Ltd CRO 15193 · Letterkenny | Letterkenny | 3 May 1954 |
