Todd Blackadder will leave Bath Rugby at the end of the season to become head coach at Japanese side Toshiba.
Blackadder will step down from his role as Director of Rugby at the Premiership side following their final game of the season against Leicester on May 18.
In September, the 47-year-old signed a contract extension to stay at The Rec until the end of next season - with former club captain Stuart Hooper lined up as an eventual successor.
But after the New Zealander was granted an early release, it is unclear if Hooper remains in contention for the top job.
In a statement, Blackadder said it had been an “honour and a privilege” to lead the Blue, Black and White over the last three years.
Bath Rugby said it will confirm the details of its new coaching structure in the coming weeks.