Yujin (유진), alternatively spelled as Yoojin or Youjin and stylized as Eugene, Eujin or UJin, may refer to:
- Artists
- Eugene, a soloist and former member of S.E.S.
- Ujin (currently known as YeonWoo), a soloist and former member of T.T.Ma
- Jeong Yu Jin (formerly known as Mail), a soloist and former member of The Ark
- Sung Yoojin, a soloist singer and former member of The SeeYa
- People
- Yoojin of ARTBEAT v
- Choi Yujin of Azer
- Youjin (currently known as Song Iyaki) of Blue Fox, former member of BaBa and ACE
- Yujin of eite, former member of pre-debut group ALLS-GIRL and former member of LIPBUBBLE
- Yujin of Fresh
- Yujin (currently known as Hayun) of GIRL CRUSH, former member of BaBa and pre-debut member of BLAZE
- Heo Yu Jin of HI CUTIE
- An Yujin of IVE, former member of IZ*ONE and former Produce 48 contestant
- Yujin of Kep1er, former member of CLC and former Girls Planet 999 contestant
- Yoojin of MAGIC TOUCH
- Eugene of SUPERKIND
- Han Yu Jin of ZEROBASEONE, former Boys Planet contestant
- Eujin, former member of 4TEN
- Yoo Jin, former member of BP POP
- Yujin, former member of Brave Girls
- Youjin, former member of D.Holic
- Yujin, former pre-debut member of HitGirlz
- U-Jin, former member of I.C.E
- Jung Yujin, former member of Jewelry
- Youjin, former member of K-TIGERS ZERO
- Kim You Jin, former member of KNK
- Yujin (currently known as Danbi), former pre-debut member of Like Me
- Yujin, former member of pre-debut group Moonlight Girls
- Yujin (currently known as Oh Chae Yi), former member of Playback
- Yu Jin, former member of PPL
- Yang Yujin, former member of Pritti
- Yujin (formerly known as UJin), former member of S#aFLA and D-UNIT
- YuJin, former member of Sunny Play
- Yujin, former member of Unicorn
- Yujin, former pre-debut member of WishGirls
- Yujin, former member of XOX and Chumchurum
- Bae Yujin, former CAP-TEEN contestant
- Ko Yu Jin (currently known as Ko Liha), former Produce 48 contestant
- Won Yu Jin, former Show Queen contestant
- Kim Yujin, former Top 10 Student contestant
- Yang Eugene, former Universe Ticket contestant