Oleg Dulub or Aleh Dulub (; ; born 20 September 1965) is a Belarusian professional football coach and a former player, who manages Nyva Ternopil.
From 7 October 2016 until 11 June 2017, Dulub worked as a manager at Karpaty Lviv.
From 4 September until 22 December 2017, he worked as a manager at Chornomorets Odesa.
On 6 September 2021, Dulub took over FC Lviv from the Ukrainian Premier League.
On 13 January 2026, he headed Nyva Ternopil.