Vitali Aleksandrovich Dyakov (; born 31 January 1989) is a Russian former professional footballer.
He made his professional debut in the Russian Second Division in 2007 for Sochi-04.
On 14 July 2017, he signed a 2-year contract with the Turkish club Sivasspor.
On 29 August 2018, he dissolved his Sivasspor contract.
On 28 February 2019, he signed with Belarusian club Dinamo Minsk until the end of the 2019 season.