- Gaskell, Peter
- George, William Richard Philip
- Gibbs, Francis Michael
- Gilham, Jamie
- Gilmore-James, Terence
- Gooding, Ruth
- Gramich, Katie
- Gray-Jones, Arthur
- Gresham, Colin Alistair
- Gridley, Richard
- Griffith, Gareth W.
- Griffith, Griffith Wynne
- Griffith, Llewelyn Wyn
- Griffith, Robert David
- Griffith, William
- Griffiths, David Goronwy
- Griffiths, David John
- Griffiths, Griffith Milwyn
- Griffiths, Jamie
- Griffiths, Ralph A.
- Griffiths, Rhidian
- Griffiths, Rhys Lewis
- Griffiths, Thomas Elwyn
- Gruffudd, Ceris
- Gruffudd, Heini
- Gruffydd, Ioan Wyn
- Gruffydd, Robert Geraint