The winning card will be chosen by the First Minister and used as his official Christmas card, which will be sent across Wales and the world.
Y cerdyn buddugol fydd y cerdyn Nadolig swyddogol eleni, a bydd yn cael ei anfon at bobl bwysig ledled y byd gan gynnwys Ei Mawrhydi’r Frenhines a Phrif Weinidog y DU.