TMZ reports the 41-year-old the singer hanged himself at a home in Palos Verdes Estates, California.
His body was found this morning.
Bennington has been public with his struggles with substance abuse and depression.
He leaves behind 6 children from 2 wives.
Bennington was most recognizable to Hip Hop fans for the 2004 Linkin Park JAY-Z joint EP Collision Course, which went double platinum.
RIP.