Rio Sasaki (佐々木 りお, Sasaki Rio, March 25, 2002) is a Japanese voice actress, actress, and former child actress. She was born in Saitama prefecture. She was affiliated with the Himawari Theater Company.

• 蟲師 特別篇「日蝕む翳」 (2014)

  
• 魔女っこ姉妹のヨヨとネネ (2013)

  
• ルドルフとイッパイアッテナ (2016)