Epsilon Tauri (abbreviated ε Tauri or ε Tau) is an orange giant star located approximately 45 parsecs (147 light-years) from the Sun in the constellation of Taurus. It has the traditional name Ain (Arabic عين for "eye") and was given the name Oculus Boreus (Latin for "Northern eye") by John Flamsteed. An extrasolar planet (designated Epsilon Tauri b, later named Amateru) is believed to be orbiting the star.