Ya-Ya-yah! was a Johnny's Jr. TV show aired weekly on TV Tokyo.
The show first aired on January 5th, 2003 featuring mainly the group Ya-Ya-yah and from K.K.Kity (later NEWS), Koyama Keiichiro, Kato Shigeaki and Kusano Hironori. And during the 'LIVE Stage' part it also featured more Johnny's Jr. members.
With the sudden debut of Ya-Ya-yah member, Yabu Kota and Yaotome Hikaru, as part of Hey! Say! JUMP in 2007, this show aired its last episode on October 27th. The show was then replaced by Hi! Hey! Say! featuring only Yabu Kota and Yaotome Hikaru with Koyama Keiichiro as host.
- January 2003 - March 2007: Sundays 12:24-12:54
- April 2007 - October 2007: Saturdays 18:30-19:00