Ignacio Buse defeated Tommy Paul in the final, 7–6(8–6), 4–6, 6–3 to win the men's singles tennis title at the 2026 Hamburg Open. It was his first ATP Tour title. Buse became the first qualifier to win the Hamburg Open since Nikoloz Basilashvili in 2018 and the first Peruvian player to win an ATP Tour singles title since Luis Horna in 2007.
Flavio Cobolli was the defending champion, but lost in the first round to Buse.
Aleksandar Kovacevic and Paul became the first American quarterfinalists at the event since Andre Agassi, and later semifinalists since Pete Sampras in 1995. Paul went on to become the first American finalist at Hamburg since Jimmy Connors in 1981. Kovacevic became the first lucky loser to reach the semifinal since Leonardo Mayer in 2017.
Seeds
Draw
Finals
Top half
Bottom half
Qualifying Seeds
Qualifiers
Lucky losers
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
External links Main draw Qualifying draw