Sion (시온), alternatively stylized as Shion, Xion and Zion, may refer to:
- Artists
- Sion (also known as Fairy Mai and formerly known as Sia), a soloist singer and former member of eite
- People
- Sion of Geenius, pre-debut group Bebez, former Girls Planet 999 contestant
- Shion of E11iVyn
- Sion of MVP
- Zion of N-SONIC
- Sion of NCT
- Xion of ONEUS
- ShiOn of tripleS
- Sion of YOUNITE
- Sion, former member of AL and A.sia
- Zion, former member of GP Basic
- Zion, former member of LXIA
- Sion (formerly known as Ryua), former member of Saturday and LIPBUBBLE
- Zion, former pre-debut member of B-OURS
- Kim Si On, former MAKE MATE 1 and Project 7 contestant
- Park Sion, former Produce X 101 contestant
- Kim Zion, former Stars Awakening contestant