Altın Gün (meaning Golden Day in Turkish) is an Anatolian rock band from Amsterdam, Netherlands. It was founded by bassist Jasper Verhulst in 2016. Their style has been described as "psychedelic" with a "dirty blend of funk rhythms, wah-wah guitars and analogue organs". Altın Gün also performs psychedelic rock covers of Turkish folk music. Both the band's vocalists, Merve Daşdemir and Erdinç Ecevit Yıldız, are of Turkish origin, while the other four members are Dutch.
Their debut album was On, released in 2018. In 2019, they released Gece which was nominated for the 62nd Annual Grammy Awards (2019) in the Best World Music Album category. The band's first American tour commenced in mid 2019.