Óscar Eduardo Estupiñán Vallesilla (Spanish pronunciation: [ˈoskaɾ estupiˈɲan]; born 29 December 1996) is a Colombian professional footballer who plays as a striker for Liga MX club FC Juárez.

[5] He made his debut on 5 August in the Supertaça Cândido de Oliveira, replacing Paolo Hurtado for the final nine minutes of a 3–1 loss to S.L.

[7] Having made 14 league appearances and scored once in 18 months at Vitória, Estupiñán returned to South America in January 2019 on loan to Barcelona S.C. in Ecuador.

[20] On 10 August 2024, Estupiñán marked his return to Hull by scoring an added-time penalty to equalise against Bristol City on the opening day of the 2024–25 season.

The call-up came following his impressive goal return in the 2021–22 Primeira Liga season in which he netted 15 times in 28 appearances ranking as one of the League's top goalscorers.