St Kilda have announced that former Carlton mentor Brett Ratten will join the Saints as an assistant coach.

Ratten is currently serving as an assistant under four-time premiership coach Alastair Clarkson at Hawthorn, and will begin his role at the Saints at the conclusion of the Hawks' 2018 campaign.

โ€œBrett is one of the most experienced assistant coaches in the game and we look forward to the impact he can have on our football program,โ€ Saints general manager football Simon Lethlean told the club website.

โ€œHe is highly regarded across the football industry and as midfield coach at the Hawks, was a key driver in their premiership success.โ€

Ratten joins former Port Adelaide and Richmond coach Brendan Lade as new inclusions to St Kilda's coaching team.

Ratten was a senior coach at Carlton from 2007-12 before spending the past six seasons at Hawthorn.

โ€œWe respect that Brettโ€™s focus is rightfully still on his current role at Hawthorn, however, we look forward to welcoming him and his family to the Saints over the off-season,โ€ Lethlean added.