Ymddiriedolwyr presennol:

Siân Bailey, 2014- 
Mike Cuddy (Trysorydd Anrhydeddus), 1999-
Rhys Llwyd Davies (Ysgrifennydd Anrhydeddus), 2008- 
Yr Athro Rhiannon Evans MBE, 2014-
Simon Fenoulhet, 2022-
Dr Hesam Kamalipour, 2023-
Chris Loyn, 2022-
Jonathan Vining, 2003-
Dominic Wilkinson, 2023-
Elin Wyn (Cadeirydd), 2018-

Ymddiriedolwyr blaenorol:

Yr Athro C Malcolm Parry, Cadeirydd, 1999-2023
Dr Neil Harris, 2003-2023
Emma Price, 2017-2020 
Gavin Harris, 2011-2017 
Wyn Thomas OBE, 1990-2016 
William G D Smith, 2003-2016 
John B Hilling, 1990-2012
David Leighton, 1990-2009
Margaret McAdam, 1999-2009
Dr Sam Romaya, 1990-2008
Stanley Hall Cox MBE, 1990-99
Neil Gaccon, 1990-97
Eurfyl Davies, 1990-97