"Manatsu no Sounds Good!" (真夏のSounds good !, "Midsummer 'Sounds good !'") is the 26th single by the Japanese girl idol group AKB48, released in Japan on May 23, 2012.

In its first week, the CD single sold 1,616,795 copies according to Oricon and became AKB48's bestselling single. In August 2012, it was certified "2 Million" by RIAJ. On December 30, 2012, the song won the Grand Prix at the 54th Japan Record Awards, making this their second consecutive win for the group.

The single is Atsuko Maeda and Asuka Kuramochi's final senbatsu recording with the group.

"Manatsu no Sounds Good" comprises various editions released on May 23, 2012.

The first presses of the single came with a ticket to vote in the AKB48 27th Single Senbatsu Election (to choose the members to be featured in the next AKB48's single, to be released in the summer.)

The Type-A edition comes in a CD+DVD set, consisting of six tracks, half of which are off vocal versions, as well as four music videos and a member profile track. The Type-B edition is also a CD+DVD set, composed of the same tracks as Type-A except "Chōdai, Darling!", which is replaced by "Gugutasu no Sora". Both editions are available with an alternative cover on the group's first pressings.

The Theater edition comes in a CD with the same tracks as Type-A but "Chōdai, Darling!", which is replaced by "Kimi no Tame ni Boku Wa".

As of the day of its release, AKB48 shipped a personal record of 2.0 million copies.