"Tsubame" (ツバメ, Japanese for "swallow") is a song recorded by Japanese duo Yoasobi, featuring special group Midories, from their second EP, The Book 2 (2021). It was released on October 25, 2021, through Sony Music Entertainment Japan, as a stand-alone digital single. It features as a theme song of NHK's SDGs children television program series Hirogare! Irotoridori.