The 2025 Dialectic Zug Open was a professional tennis tournament played on outdoor clay courts. It was the fourth edition of the tournament and part of the 2025 ATP Challenger Tour. It took place in Zug, Switzerland between 21 and 27 July 2025.
Singles main draw entrants Seeds Country Player Rank1 SeedZsombor Piros1661Marc-Andrea Hüsler1702Calvin Hemery1713Harold Mayot1784Francesco Maestrelli1795Santiago Rodríguez Taverna1886Facundo Díaz Acosta1897Benjamin Hassan1968 1 Rankings as of 14 July 2025.
Other entrants The following players received wildcards into the singles main draw: Henry Bernet Mika Brunold Kilian Feldbausch
The following player received entry into the singles main draw as a special exempt: Lukáš Klein
The following players received entry into the singles main draw as alternates: Geoffrey Blancaneaux Lorenzo Giustino
The following players received entry from the qualifying draw: Rémy Bertola Petr Brunclík Román Andrés Burruchaga Maximilian Neuchrist Jakub Paul Stefanos Sakellaridis
Champions Singles
Lukáš Klein def. Harold Mayot 6–2, 6–7(4–7), 6–4.
Doubles
Geoffrey Blancaneaux / Harold Mayot vs. Nam Ji-sung / Takeru Yuzuki, not completed.
References