| NICHOLLS, Richard Andrew ACTIVE | Secretary | 01 Jan 2025 | | | | The Corner House, 6, Carmarthen Street, Llandeilo, SA19 6AE, Wales |
| BELL, Carol, Dr ACTIVE | Director | 31 Mar 2024 | | United Kingdom | October 1958 | The Corner House, 6 Carmarthen Street, Llandeilo, Carmarthenshire, SA19 6AE, Wales |
| CLUBB, Nigel David ACTIVE | Director | 01 May 2024 | | Wales | November 1949 | Glynderi, Cerrigcochion Lane, Brecon, LD3 7NP, Wales |
| ELIS-WILLIAMS, David Geoffrey ACTIVE | Director | 11 Sep 2019 | | Wales | February 1957 | The Corner House, 6 Carmarthen Street, Llandeilo, Carmarthenshire, SA19 6AE, Wales |
| GALE, Fiona Elizabeth ACTIVE | Director | 12 Sep 2018 | | United Kingdom | February 1954 | The Corner House, 6 Carmarthen Street, Llandeilo, Carmarthenshire, SA19 6AE, Wales |
| JOHN, Hywel Rhys Richard ACTIVE | Director | 31 Mar 2024 | | Wales | December 1963 | The Corner House, 6 Carmarthen Street, Llandeilo, Carmarthenshire, SA19 6AE, Wales |
| OWEN-JOHN, Henry Stuart ACTIVE | Director | 01 May 2024 | | England | July 1955 | The Corner House, 6 Carmarthen Street, Llandeilo, Carmarthenshire, SA19 6AE, Wales |
| RATCLIFFE, John Baron ACTIVE | Director | 09 Sep 2020 | | Wales | May 1953 | The Corner House, 6 Carmarthen Street, Llandeilo, Carmarthenshire, SA19 6AE, Wales |
| REES, Sian Eluned ACTIVE | Director | 31 Mar 2024 | | Wales | March 1950 | The Corner House, 6 Carmarthen Street, Llandeilo, Carmarthenshire, SA19 6AE, Wales |
| WAINWRIGHT, Judith ACTIVE | Director | 31 Mar 2024 | | Wales | April 1954 | The Corner House, 6 Carmarthen Street, Llandeilo, Carmarthenshire, SA19 6AE, Wales |
| WILLIAMS, Steffan Rhys ACTIVE | Director | 31 Mar 2024 | | England | December 1967 | The Corner House, 6 Carmarthen Street, Llandeilo, Carmarthenshire, SA19 6AE, Wales |
| DAVIDSON, Andrew Franklin RESIGNED | Secretary | 14 Sep 2011 | 31 Mar 2024 | | | Craig Beuno, Garth Road, Bangor, Gwynedd, LL57 2RT |
| FASHAM, Peter John RESIGNED | Secretary | | 16 Jul 1992 | | | 82 Dinerth Road, Rhos On Sea, Colwyn Bay, Clwyd, LL28 4YH |
| HANNAH, David Marshall RESIGNED | Secretary | 09 Sep 1996 | 28 Jun 2000 | | | 6 Bron Y Felin, Llandegfan, Menai Bridge, Gwynedd, LL59 5UY |
| JONES, John Ellis RESIGNED | Secretary | 28 Jun 2000 | 14 Sep 2011 | | | 2 Fronheulog, Tregarth, Bangor, Gwynedd, LL57 4RD |
| LONGLEY, David Michael Thomas RESIGNED | Secretary | | 07 Jun 1995 | | | 25 Glanrafon Street, Bethesda, Bangor, Gwynedd, LL57 3AL |
| WILLIAMS, John Llywelyn Wynne, Dr RESIGNED | Secretary | 07 Jun 1995 | 09 Sep 1996 | | | Neuadd John Morris Jones, Bangor, Gwynedd, LL57 2TF |
| AYLING, Lynne, Professor RESIGNED | Director | 10 Sep 2014 | 12 Sep 2018 | Wales | November 1957 | Ty Newydd, Bryn Ffynnon, Y Felinheli, Gwynedd, LL56 4SX, Wales |
| DAVIES, Hywel Lloyd RESIGNED | Director | 08 Mar 2023 | 01 May 2024 | Wales | May 1949 | Bryn Ffynnon, Rhosygwalia, Bala, LL23 7PP, Wales |
| DUNN, Margaret Jane RESIGNED | Director | 19 Dec 2002 | 12 Sep 2018 | Wales | March 1942 | Bryn Y Bedd, Nant Gwynant, Caernarfon, Gwynedd, LL55 4NL |
| EDWARDS, Nancy Margaret, Professor RESIGNED | Director | | 11 Sep 2019 | Wales | January 1954 | Garth Mor, Siliwen Road, Bangor, Gwynedd, LL57 2BH |
| EVANS, Janet Patricia RESIGNED | Director | 07 Dec 2016 | 11 Dec 2019 | United Kingdom | March 1951 | Cae'R Berllan, Ffordd Berthddu, Llanrwst, LL26 0PP, United Kingdom |
| FRANCIS, Lynn Crowther RESIGNED | Director | 09 Dec 2016 | 08 Dec 2021 | Wales | March 1974 | 13, Bangor Road, Caernarfon, LL55 1LR, Wales |
| GRUFFYDD, Alun RESIGNED | Director | 11 Mar 2009 | 22 Mar 2017 | Wales | November 1968 | Hen Fuarth, Rhostrehwfa, Llangefni, Ynys Mon, LL77 7YS |
| HANNAH, David Marshall RESIGNED | Director | 07 Jun 1995 | 31 Jul 2004 | | November 1936 | 6 Bron Y Felin, Llandegfan, Menai Bridge, Gwynedd, LL59 5UY |
| HOULDER, Christopher Howard RESIGNED | Director | | 11 Feb 2001 | | July 1928 | Brynllwyd Cliff Terrace, Aberystwyth, Dyfed, SY23 2DN |
| JENKINS, David Arthur, Dr RESIGNED | Director | | 07 Sep 2016 | United Kingdom | February 1938 | Llys Geraint, St Anns, Bethesda, Gwynedd, LL57 4AX |
| JONES, Bedwyr Lewis, Yr Athro RESIGNED | Director | | 29 Aug 1992 | | September 1933 | Bodafon, Siliwen, Bangor, Gwynedd, LL57 |
| JONES, John Eryl Owen RESIGNED | Director | | 24 Jan 2000 | | January 1912 | Rhiw Dafnau, Ffordd Menai, Caernarfon, Gwynedd, LL55 |
| JONES, John Ellis RESIGNED | Director | | 09 Sep 2015 | United Kingdom | October 1929 | 2 Fronheulog, Tregarth, Bangor, Gwynedd, LL57 4RD |
| KELLY, Richard Silyn RESIGNED | Director | 10 Sep 2014 | 17 Jan 2022 | United Kingdom | June 1951 | 1 Llys Trefor Barns, Llansadwrn, Menai Bridge, Anglesey, LL59 5SP, United Kingdom |
| LEA WILSON, David Murray RESIGNED | Director | 14 Sep 2011 | 22 Mar 2019 | Wales | November 1954 | Maes Y Porth, Dwyran, Llanfairpwll, Anglesey, LL61 6RF, Uk |
| LLEWELLYN, Frances Lynch RESIGNED | Director | 11 Dec 2019 | 01 May 2024 | Wales | September 1938 | Craig Beuno, Garth Road, Bangor, Gwynedd, LL57 2RT |
| OWEN, Trefor Meredith RESIGNED | Director | 19 Sep 2001 | 10 Sep 2008 | Wales | July 1926 | 27 Tal Y Cae, Tregarth, Bangor, Gwynedd, LL57 4AE |
| POWELL, Nia RESIGNED | Director | | 09 Sep 2015 | Wales | June 1953 | Bwlchllechog, Nantmor, Caernarfon, Gwynedd, LL55 4YL |
| PRITCHARD, Huw John RESIGNED | Director | 08 Mar 2023 | 01 May 2024 | Wales | April 1955 | Bryn Y Coed, Llanrwst Road, Conwy, LL32 8HZ, Wales |
| RHYDDERCH-DART, Ann RESIGNED | Director | | 07 Sep 2016 | United Kingdom | June 1951 | Hafan Deg, Bryn Celyn, Cadnant, Gwynedd, LL32 8PW |
| RICHARDSON, Francis Ann, Dr RESIGNED | Director | 07 Sep 2016 | 04 Oct 2023 | United Kingdom | May 1952 | 37, Stockleys Road, Headington, Oxford, OX3 9RH, United Kingdom |
| ROBERTS, Dafydd Graham, Dr RESIGNED | Director | 19 Mar 2003 | 19 Mar 2010 | Wales | January 1956 | Caer Wern, Lon Y Wern Tregarth, Bangor, Gwynedd, LL57 4BA |
| ROBERTS, David Mervyn, Dr RESIGNED | Director | 08 Mar 2019 | 01 May 2024 | Wales | July 1952 | Craig Beuno, Garth Road, Bangor, Gwynedd, LL57 2RT |
| ROBINSON, Gary, Dr RESIGNED | Director | 12 Sep 2018 | 01 May 2024 | Wales | December 1966 | Craig Beuno, Garth Road, Bangor, Gwynedd, LL57 2RT |
| ROGERS, Peter Standing RESIGNED | Director | 15 Sep 2004 | 12 Jun 2013 | United Kingdom | January 1940 | Bodrida, Brynsiencyn, Ynys Mon, LL61 6NZ |
| WILLIAMS, John Llywelyn Wynne, Dr RESIGNED | Director | 07 Jun 1995 | 23 Jan 2014 | United Kingdom | December 1936 | Neuadd John Morris Jones, Bangor, Gwynedd, LL57 2TF |
| WILLIAMS, Robert Richard RESIGNED | Director | | 04 Oct 2001 | | November 1916 | 2 Penlon, Menai Bridge, Gwynedd, LL59 5LW |