2025 BOSS Open
The 2025 BOSS Open was a men's tennis tournament played on outdoor grass courts. It was the 47th edition of the Stuttgart Open and an ATP 250 tournament of the 2025 ATP Tour. It was held at the Tennis Club Weissenhof in Stuttgart, Germany, from 9 June until 15 June 2025.
Champions
Singles
- Taylor Fritz def. Alexander Zverev, 6–3, 7–6
Doubles
- Santiago González / Austin Krajicek def. Alex Michelsen / Rajeev Ram, 6–4, 6–4
Point distribution
Singles main draw entrants
Seeds
- Rankings are as of 26 May 2025.
Other entrants
The following players received entry from the qualifying draw:
- James Duckworth
- Márton Fucsovics
- Yannick Hanfmann
- Pierre-Hugues Herbert
Withdrawals
- Matteo Berrettini → replaced by Roman Safiullin
- Nick Kyrgios → replaced by Corentin Moutet
- Lorenzo Musetti → replaced by Yoshihito Nishioka
- Tommy Paul → replaced by Jacob Fearnley
- Frances Tiafoe → replaced by Benjamin Bonzi
Doubles main draw entrants
Seeds
- Rankings are as of 26 May 2025.
Other entrants
- Justin Engel / Jan-Lennard Struff
- Yannick Hanfmann / Andreas Mies
Withdrawals
- Marcelo Arévalo / Mate Pavić → replaced by Jakob Schnaitter / Mark Wallner
- Simone Bolelli / Andrea Vavassori → replaced by Sriram Balaji / Miguel Ángel Reyes-Varela
- Christian Harrison / Evan King → replaced by Santiago González / Austin Krajicek
- Lorenzo Musetti / Lorenzo Sonego → replaced by Matteo Arnaldi / Lorenzo Sonego