Mae Tanni Grey-Thompson yn enwog am ei llwyddiannau fel athletwr, ac mae'n enillydd mwy nag un medal aur mewn chwaraeon Paralympaidd. Bu'n cystadlu dros Gymru mewn pum Gêm Baralympaidd a thair o Gemau'r Gymanwlad, gan ennill 16 medal, gan gynnwys 11 medal aur, ac mae’n dal dros 35 o recordiau byd.
Tanni Grey-Thompson is renowned for her achievements as an athlete, and is a multi-gold medal winner in Paralympic sport. She competed for Wales at five Paralympic Games and three Commonwealth Games, winning 16 medals, including 11 gold medals, and holding over 35 world records.