Ryotaro Okiayu
- Title: Ryotaro Okiayu
- Popularity: 7.441
- Known For: Acting
- Birthday: 1969-11-17
- Place of Birth: Kitakyushu, Fukuoka Prefecture, Japan
- Homepage: https://www.aoni.co.jp/search/okiayu-ryotaro.html
- Also Known As: 置鮎 龍太郎 , Ryoutarou Okiayu, Ryotaroh Okiayu, Ryoutaroh Okiayu, Ryôtarô Okiayu, 오키아유 료타로, 置鲇龙太郎