Shion Wakayama (若山 詩音, Wakayama Shion, born February 10, 1998) is a Japanese voice actress (seiyuu) and former child actress. She was born in Chiba Prefecture and is affiliated with Himawari Theater Group.

Shion joined Himawari Theater Group when she was 3 years old. She was scouted when she went to accompany her sister, who was a child actress. Since middle school she showed interest in voice acting because of her passion for video games.