Sven Roosen (born 27 July 2001) is a Dutch decathlete.

[1] In 2021, he finished second at the European U23 Championship in the decathlon, scoring over 8000 points for the first time.

[2][3] He became Dutch national champion in the decathlon in Apeldoorn in June 2022,[4] and finished in tenth place at the 2022 European Athletics Championships in Munich, his debut senior major competition.

[6][7] He scored a personal best mark of 8511 finishing as runner-up at the Hypo-Meeting in Götzis in May 2024, achieving the qualifying standard for the 2024 Paris Olympics.

[11] His uncle Marcel Dost participated in the 1996 Olympic Decathlon in Atlanta.