- James, E. Wyn
- James, John Williams
- James, Llyr
- James, Mary Auronwy
- James, Thomas Campbell
- Jarman, Alfred Owen Hughes
- Jenkins, A. David Fraser
- Jenkins, Barry
- Jenkins, Beth R.
- Jenkins, Dafydd
- Jenkins, David
- Jenkins, David
- Jenkins, Emlyn Glasnant
- Jenkins, Geraint H.
- Jenkins, Gwyn
- Jenkins, Islwyn
- Jenkins, John P.
- Jenkins, Robert Thomas
- Jerman, Herbert Noel
- Job, Enaf Morrice
- John, Angela V.
- John, James Mansel
- John, Jeremy Leighton
- Johnson-Smith, Genevieve
- Johnston, Dafydd
- Johnston, Samuel Henry Fergus
- Jones, Alun
- Jones, Alwyn Rice
- Jones, Annie Gwenllian
- Jones, Arfon
- Jones, Arthur Rocyn
- Jones, Bedwyr Lewis
- Jones, Benjamin George
- Jones, Dafydd
- Jones, Daniel Bertram
- Jones, David Brinley Clay
- Jones, David Gwenallt
- Jones, David Lewis
- Jones, David Peregrine
- Jones, David Thomas
- Jones, Derwyn
- Jones, Derwyn Morris
- Jones, Edgar William
- Jones, Edward
- Jones, Edwyn Henry Stuart
- Jones, Elis Gwyn
- Jones, Elizabeth Eirliw Louis (Bethan)
- Jones, Emrys Wynn
- Jones, Emyr Gwynne
- Jones, Emyr Wyn
- Jones, Emyr Wyn
- Jones, Evan David
- Jones, Evan John
- Jones, Ffion Mair
- Jones, Francis
- Jones, Francis Wynn
- Jones, Frank Price
- Jones, G. Len
- Jones, Geraint Elfyn
- Jones, Gerallt
- Jones, Griffith
- Jones, Gwen Saunders
- Jones, Gwenllian
- Jones, Gwerfyl Pierce
- Jones, Gwilym Arthur
- Jones, Gwilym Henry
- Jones, Gwilym Peredur
- Jones, Gwilym Thomas
- Jones, Gwyn
- Jones, Gwynfor
- Jones, Henry Parry
- Jones, Hugh David
- Jones, Huw Ceiriog
- Jones, Idwal
- Jones, Ieuan Samuel
- Jones, Iorwerth
- Jones, Iwan Meical
- Jones, J. Eric
- Jones, John Charles
- Jones, John David
- Jones, John Graham
- Jones, John Gwilym
- Jones, John Gwynfor
- Jones, John Henry
- Jones, John Idwal
- Jones, John Islan
- Jones, John James
- Jones, John Lewis
- Jones, John Morgan
- Jones, John Thomas
- Jones, John Thomas
- Jones, John Tysul
- Jones, John William
- Jones, Kenneth Emlyn
- Jones, Mair
- Jones, Marian Henry
- Jones, Mary Burdett
- Jones, Mary Gwynedd
- Jones, Morfudd Nia
- Jones, Moses John
- Jones, Nansi Ceridwen
- Jones, Nerys Ann
- Jones, Owain William
- Jones, P. Ann
- Jones, Pryderi Llwyd
- Jones, R. Arwel
- Jones, R. Gareth Wyn
- Jones, Richard Leslie
- Jones, Robert (Bobi) Maynard
- Jones, Robert Tudur
- Jones, Sally Roberts
- Jones, Selwyn
- Jones, T. Hefin
- Jones, Thomas
- Jones, Thomas
- Jones, Thomas
- Jones, Thomas Gwynn
- Jones, Thomas Hughes
- Jones, Thomas Isfryn
- Jones, Tom Ellis
- Jones, Trefor D.
- Jones, William David (Bill)
- Jones, William Emrys
- Jones, William Keith Williams
- Jones, William Philip
- Jones, William Rosser
- Joyner, Paul