The Maison Ikkoku CD Single Memorial File (めぞん一刻CDシングルメモリアル・ファイル, Mezon Ikkoku Shīdī Shinguru Memoriaru Fairu) is a compilation CD box set released on 11 July 1988 featuring all of the opening and ending theme songs from the anime television series Maison Ikkoku, and the theme song from the Maison Ikkoku theatrical movie. This box set is one of only three Maison Ikkoku music collections containing the theme song Hidamari by Kōzō Murashita, so this set is considered more collectable as a result.