'Secret Garden' (비밀정원) is the title track of South Korean girl group Oh My Girl's fifth EP, released in January 2018 by WM Entertainment. The group, formed by the label in 2015, used the song to lean into a dreamy fairy-tale concept that became a fan favorite. Color-coded lyric videos with Korean, romanized and English lines helped international listeners learn the words and spread the track beyond Korea. Years later the chorus still circulates in fan edits and aesthetic compilations, prized for its hopeful, blossoming mood.