Oumar Sako (born 4 May 1996) is a professional footballer who plays as a defender for Russian club Rostov. Born in the Ivory Coast, he represented it internationally, before switching allegiance to the Niger national team in 2024.
On 30 January 2024, Sako joined Russian Premier League club Rostov on loan. On 26 June 2024, Rostov made the transfer permanent and signed a three-year contract with Sako.
Sako made his debut for the Ivory Coast national team on 22 September 2019 in a CHAN qualifier against Niger.
In May 2024, Sako's club Rostov announced that he has been called up to the Niger national team. Sako made his debut for Niger on 9 September 2024 in a Africa Cup of Nations qualifier against Ghana at the Berkane Municipal Stadium in Morocco and scored the equalizing goal in a 1âÂÂ1 draw. He scored a late winner for Niger in the away 2âÂÂ1 victory over Ghana in the same qualification on 18 November 2024, even though Niger failed to advance from the qualification group.