Yoon Jeong-han

Yoon Jeong-han, known mononymously as Jeonghan, is a South Korean singer, performer, and public figure. Born on October 4, 1995, in Hwaseong, Gyeonggi Province, South Korea, he gained international recognition as a member of the South Korean boy band Seventeen, which debuted under Pledis Entertainment in May 2015. Within the group structure, he is a key vocalist and part of Seventeen's Vocal Team sub-unit.

Jeonghan was scouted by Pledis Entertainment in 2013 and underwent two years of training prior to his official debut. Since debuting, he has participated in the group's extensive discography, contributing vocals to numerous chart-topping releases and participating in major global concert tours. In June 2024, he debuted in the sub-unit JxW alongside bandmate Wonwoo, releasing the single album This Man. Beyond group releases, he hosted a weekly segment on Tokyo FM's radio program School of Lock in 2023.

Throughout his career, Jeonghan has expanded his presence into fashion and commercial endorsements. He has served as an official brand ambassador for cosmetic and luxury fragrance brands, including Banila Co and Acqua di Parma, appearing in international marketing campaigns and prominent fashion magazines. He has also been a central figure in Seventeen's web variety show, Going Seventeen.

In September 2024, Jeonghan temporarily paused his public promotional schedule to fulfill his mandatory military service in South Korea, serving as a social service agent. He completed his military obligation in June 2026 as the first member of Seventeen to finish service, subsequently resuming his activities in the music and entertainment industry.