Yonko Nedelchev () (born 6 July 1974) is a Bulgarian former footballer who played as a defender.
Coming through the youth ranks of Rozova Dolina in Kazanlak, Nedelchev spent his entire career in his country, reaching a Bulgarian Cup final with Levski Sofia in 1997. He is a former member of the Bulgaria U21 team. Nedelchev is known as a passionate player and is popular with Botev Plovdiv supporters.