Gallwch gofrestru eich penderfyniad unrhyw amser drwy ffonio 0300 123 23 23 (gwasanaeth Gwaed a Thrawsblaniadau'r GIG fydd yn ateb y galwadau hyn), mynd i www.rhoiorganau.org  neu drwy ddweud wrth eich teulu (a'ch ffrindiau).
You can register a decision at any time by calling 0300 123 23 23 (Calls to this phone line will be answered by NHS Blood and Transplant) or visiting www.organdonationwales.org or by telling your family (and friends).