Duah made his debut for the Switzerland national team on 4 June 2024 in a friendly against Estonia.[5] On 7 June, he was selected in the 26-man squad for the UEFA Euro 2024.[6] On 15 June, he scored his first international goal in a 3–1 victory over Hungary in Switzerland's opening match of the tournament.[7]
Personal life
Duah was born in London, England, and moved to Switzerland at a young age.[8] He is of Ghanaian descent, and holds dual citizenship with Ghana and Switzerland. He is also fan of London football club Chelsea F.C.[9]