"Kibōteki Refrain" (希望的リフレイン^?, also "Kibouteki Refrain", lit. Hopeful Refrain) is the 38th single by the Japanese idol girl group AKB48. The personnel that were chosen to sing in the song was revealed during the group's fifth rock-paper-scissors tournament. The song premiered during All Star Kanshasai 2014 on TV channel TBS. It was released in Japan on November 26, 2014. It was the second best-selling single of the year in Japan, with 1,156,706 copies.

Mayu Watanabe and Sakura Miyawaki are the center performers for this song. This is Watanabe's third consecutive single in which she served as a center performer. The title track uses 32 members, including A-side debuts for Ryoka Oshima, Saya Kawamoto, Miru Shiroma, Ikumi Nakano, Mion Mukaichi, Tomu Muto and Madoka Moriyasu. The music video includes guest appearances by AKB48 alumni Tomomi Itano, Yuko Oshima, Mariko Shinoda and Atsuko Maeda.

Several of the single's supporting tracks were originally promoted as music videos on the group's album Koko ga Rhodes da, Koko de Tobe!. They include "Juujun na Slave" (従順なSlave), "Hajimete no Drive" (初めてのドライブ), "Loneliness Club" (ロンリネスクラブ), "Me wo Aketa Mama no First Kiss" (目を開けたままのファーストキス), and "Reborn".

All lyrics written by Yasushi Akimoto.

One-shot units "Baragumi", "Yurigumi" and "Katareagumi" were created for some of the tracks on the different single types.

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