- group: seventeen
- company: pledis entertainment
- name: yoon jeonghan (윤정한)
- d.o.b: october 4, 1995 ; 951004
- zodiac: libra
- birthplace: seoul, south korea
- nationality: korean
- position: sub-vocal
- subunit: vocal team
may 7 2017 ∞
jul 18 2017 +
jul 18 2017 +