Shugo Chara Egg! is a Hello! Project unit consisting of four Hello! Pro Egg members. Maeda Yuuka (Amulet Heart), Saho Akari (Amulet Spade), Fukuda Kanon (Amulet Clover), and Wada Ayaka (Amulet Diamond).

The unit was formed to sing some of the new opening themes for the second season of the anime adaptation of the Shugo Chara! manga. (Shugo Chara! Doki)

It was revealed in Nakayoshi Magazine that Shugo Chara Egg! would return for the third Shugo Chara! series ("Shugo Chara Party!"), with a new lineup. They will act as hosts in live action segments on the show, and sing the opening theme for the anime segment ("Shugo Chara! Dokki Doki") of the program.

The new lineup consists of three Hello! Pro Egg members (one of which was in the first lineup). The new lineup is: Saho Akari (Amulet Spade), Fukumura Mizuki (Amulet Heart), Maeda Irori (Amulet Clover); Tanabe Nanami has been chosen through Amulet Diamond Audition to be the fourth member of the group.