Dee ihe ga-aga n'ihu na paragraf a - Hem Thon Vitiny (; amụrụ na 7 Septemba 1993 na Phnom Penh, Cambodia) bụ onye na-egwu mmiri na Cambodia. Ọ gbara asọmpi n'egwuregwu Olimpik nke afọ 2012 n'asọmpi 50 m freestyle
wee mechie na ọkwa nke 57 na agba nke mbụ. Vitiny agafebeghị ọkara-ikpeazụ.