Canlyniadau etholiadau ar gyfer De Brychdyn

 Independent / Annibynnol Ennill Peter Ronald Pemberton was wedi'i ethol with a majority of 1%. Cafodd cyfanswm o 1502 o bleidleisiau eu bwrw.

Table of main parties and election candidates retaining deposit

Ymgeisydd etholiad	Plaid	Nifer	%	Statws	% Newid
Peter Ronald Pemberton	Independent / Annibynnol	397	26%	Newly elected	n/a
David McFarlane	Independent / Annibynnol	382	25%	Newly elected	n/a
Derek Butler	Labour / Llafur	363	24%	Heb ei ethol	n/a
Roz Griffiths	Labour / Llafur	360	24%	Heb ei ethol	n/a