Rose will take at the end of the season when current manager Andoni Iraola steps down.
The Cherries announced last night: "AFC Bournemouth is delighted to confirm the appointment of Marco Rose as the club’s new head coach on a three-year contract, which will begin following the conclusion of the 2025/26 season.
"The 49-year-old arrives on the south coast with a wealth of experience at the highest level of European football, having managed Red Bull Salzburg, Borussia Mönchengladbach, Borussia Dortmund, and RB Leipzig.
"The club’s immediate focus remains firmly on finishing the current campaign as strongly as possible, with the players and staff continuing to show full commitment to achieving positive results and building on the current 13-game unbeaten run.
"Everyone at AFC Bournemouth looks forward to welcoming Marco to Vitality Stadium as he begins his role as head coach in the summer."
Bournemouth sit eighth on the Premier League table following Saturday's win at Newcastle and only sit behind sixth-placed Chelsea on goal difference.