Lasse Rosenboom (born 19 January 2002) is a German professional footballer who plays as a defender for Holstein Kiel.
Stints at the youth academies of JFV Norden and JFV Nordwest followed, before he joined the youth academy of Bundesliga side Werder Bremen at the age of fifteen.
[1] He started his senior career with the club's reserve team, making fifty-two league appearances and scoring two goals.
[3] From 2018 to 2019, Rosenboom played for the Germany national under-16 football team and the Germany national under-17 football team.
Altogether, he made ten appearances while playing for the Germany national under-16 football team and the Germany national under-17 football team, including at the 2019 UEFA European Under-17 Championship, where Germany was unable to reach the knockout stage.