He's has signed a deal with Kobe Steelers.
Gatland will link up with his Chiefs teammate, All Blacks lock Brodie Retallick, at Kobe, with the latter announcing his departure earlier this year.
Chiefs head coach Clayton McMillan praised Gatland's character and abilities.
"Bryn has been an excellent Chief over the last three years. He is an experienced and calm tactician, an outstanding goal kicker and a tough defender. These qualities will serve him well as he embarks on the next phase of his rugby journey."
