Warugaki 1 (悪ガキッ①, Warugaki Ichi) is the first studio album by Japanese girl idol group S/mileage.

It was released on 8 December 2010 on the label Hachama.

The limited edition contained an additional DVD.

The album contained 12 tracks on the CD: 7 songs that were originally released as A-sides of 7 physical singles and 5 new songs.

[1] Members of S/mileage: All tracks are written by Tsunku