Produce 101 Season 2 is a 2017 boy group survival reality show on Mnet, and is the second season of the original South Korean version of the franchise. The public "produces" a boy group by choosing 11 members among 101 trainees from 54 entertainment companies through online voting and live voting with multiple elimination rounds. The public also chose the group's concept, debut song and group name. In the season finale on June 16, 2017, which was broadcast live, the show announced the final 11 members who would debut as Wanna One. More than 16 million people cast their votes during the finale, equivalent to around 30% of South Korea's population.

Wanna One (Korean: 워너원) was a South Korean boy band formed by CJ E&M through the second season of Produce 101. The group was composed of eleven members: Kang Daniel, Park Ji-hoon, Lee Dae-hwi, Kim Jae-hwan, Ong Seong-wu, Park Woo-jin, Lai Kuan-lin, Yoon Ji-sung, Hwang Min-hyun, Bae Jin-young and Ha Sung-woon. The group debuted on August 7, 2017, under Swing Entertainment and CJ E&M. Their contract ended on December 31, 2018, but their final activity as a group was their single album B-side released on January 27, 2022.