Ilia Dyakov (Bulgarian: ???? ?????) (born 29 September 1963) is a Bulgarian former footballer who played as a defender.
He was selected for the Bulgaria squad at the 1986 FIFA World Cup but did not play.
He did play in the qualifying campaigns for the 1986 tournament, winning 5 caps.
In club football, he spent his whole career in his native country, where he represented his hometown club Dobrudzha Drobich, CSKA Sofia, and Slavia Sofia.