CoroCoro Ichiban! (Japanese: コロコロイチバン！, Korokoro Ichiban!) is a Japanese manga magazine created by Shogakukan as a sister magazine to CoroCoro Comic magazine. It is currently published monthly. (Formerly bi-monthly.)
While it targets at child readers just like what CoroCoro Comic does, what set Ichiban! apart from it is that it mainly publishes gag and comedy manga.