Oscar Aga (born 6 January 2001) is a Norwegian footballer who plays as a forward for Elfsborg in the Swedish first division. Coming through the youth ranks of Lyn and Stabæk, he made his Eliteserien debut in April 2018 against Brann. He scored his first goals in the 2019 Norwegian Football Cup, 5 goals in 3 matches. He was loaned out to Grorud at the closing of the summer 2019 transfer window. In 2021 Oscar Aga made the move to the swedish club IF Elfsborg and signed a contract that extends to 2025.