Chiaki Tone (戸根 千明, Tone Chiaki, born October 17, 1992 in Tsuzuki, Kyoto, Japan) is a professional Japanese baseball player. He plays pitcher for the Yomiuri Giants.
On November 16, 2018, he was selected Yomiuri Giants roster at the 2018 MLB Japan All-Star Series exhibition game against MLB All-Stars.
Tone has a Japanese father and a Filipino mother.