Viktor Andriyovych Yushchenko ( Ukraina-gi : В?ктор Андр?йович Ющенко , 1954 ni 2 goe?h 23 ji?t chhut-si ) s? Ukraina e chi?t e cheng-t?-ka. I t? 2005 ni kau 2010 ni s? Ukraina chong-thong.