The Trust Deed provides for a total of nineteen Trustees, six of whom are ex-officio Trustees.
Gwerfyl Pierce Jones
(Now retired and formerly Director of the Welsh Books Council).
Professor Derec Llwyd Morgan
(now retired and formerly Vice Chancellor of Aberystwyth University).
The Most Reverend John Davies
Archbishop of Wales.
Melda Grantham
General Secretary of the Welsh Department of Unitarian Churches.
Richard Morris Jones
Chair of the Council of the National Eisteddfod of Wales.
Reverend Judith Morris
General Secretary of the Baptist Union of Wales.
Reverend Meirion Morris
General Secretary of the Presbyterian Church of Wales.
Reverend Dr Geraint Tudur
General Secretary, Undeb yr Annibynwyr Cymraeg.
Professor Jane Aaron
Formerly Professor of English at the University of South Wales
Reverend Dr R Alun Evans
Minister of Religion and formerly Head of the BBC in North Wales
Mr Alun Charles
Retired schools’ inspector and author
Dr Rhidian Griffiths
Formerly of the National Library of Wales
Geraint R Jones
Formerly Chief Executive, Gwynedd County Council
David Gwynder Lewis
Chairman Hunters and Frankau Group Ltd and formerly Vice Chairman of Hambros
Enid Lewis
Finance Manager, Cancer Research Wales
Professor Derec Llwyd Morgan
(now retired and formerly Vice Chancellor of Aberystwyth University).
Wyn Penri Jones
Formerly Credit and Commercial Banking Manager
Gwerfyl Pierce Jones
(Now retired and formerly Director of the Welsh Books Council).
Ken Richards
Formerly Senior Lecturer in Economics, Aberystwyth University
Roy Frederick Sharp
Formerly Secretary Accountant, Alexanders Discount plc
Dr Eryn White
Reader in the Department of History and Welsh History at Aberystwyth University
English 
Cymraeg 