"Ultra Lover" is the third Japanese single by South Korean boy band 2PM.

The single was released along with the group's second live DVD "1st Japan Tour 2011 "Take Off" in Makuhari Messe".

The B-side is a Japanese version of their Korean song "I'll Be Back", which served as the lead single of their EP Still 2:00PM.

The group made the first performance of the song on the show Happy Music in November 12.

The group made other performance of the song on the show Music Fair in November 26.