Canlyniadau etholiadau ar gyfer Mostyn

  Ennill Patrick Heesom was wedi'i ethol with a majority of 34%. Cafodd cyfanswm o 573 o bleidleisiau eu bwrw, representing a turnout of 40% .

Table of main parties and election candidates retaining deposit

Ymgeisydd etholiad	Plaid	Nifer	%	Statws
Patrick Heesom		385	67%	Wedi'i ethol
Robert Dowie	Labour / Llafur	188	33%	Heb ei ethol