I.O.I

I.O.I is active as of 2026-11-15.

I.O.I was formed in 2016 through the Mnet audition show Produce 101. Out of 101 trainees from many different agencies, 11 members chosen by viewer votes made up the group. It was a project group set up to be active for a limited period of time.

I.O.I is pronounced "ai-o-ai," letter by letter. The group has also been introduced as "Ideal of Idol," and the name visually echoes "101" from the show Produce 101 that created it. The official spelling places periods between the letters, as in I.O.I.

I.O.I debuted on May 4, 2016, with "Dream Girls." The song was the title track of the group's debut mini album, Chrysalis. Because the group debuted soon after the audition show ended, its first release drew a great deal of attention from viewers who had followed the program.

I.O.I's eleven members are Lim Na-young, Kim Chung-ha, Kim Se-jeong, Jung Chae-yeon, Zhou Jieqiong, Kim So-hye, Yoo Yeon-jung, Choi Yoo-jung, Kang Mi-na, Kim Do-yeon and Jeon So-mi. Each member has continued individual work. Kang Mi-na and Zhou Jieqiong did not take part in the 2026 reunion.

After debuting in 2016, I.O.I wrapped up its project activities in January 2017, and the members returned to their own agencies. In May 2026 the group came back together for its tenth debut anniversary, meeting fans with a new album and an Asian tour. Please check official notices for any further activities.

Widely known I.O.I songs include the debut track "Dream Girls," "Very Very Very" and "Downpour." "Downpour" was the final single the group released before its project period ended. If you are new to I.O.I, these three songs are a comfortable place to start listening.

Yes. In 2016, seven of the members released "Whatta Man (Good Man)" as a sub-unit. The release showed a bolder, more intense mood than the full group's songs. Details about which members took part and the release information can be found in the official discography.

I.O.I's 2026 reunion activities are handled by Swing Entertainment. Official group announcements come through Swing Entertainment and the group's official channels. For each member's individual activities, please check the notices from that member's own agency, since the members belong to different companies.

If you are new, start with the debut song "Dream Girls" and the widely known "Very Very Very." Then listen to "Downpour" to feel how the group's project period came full circle. If you are curious about how the group was formed, watch performance clips from the audition show as well.

The I.O.I members belong to different agencies and work as singers, actors and more, so each member's own official channels are the most accurate source for individual news. Rely on official notices for group news, and please do not spread unconfirmed rumors about the members.