| 2026 Zug Open | |
|---|---|
| Date | 20 – 26 July |
| Edition | 5th |
| Surface | Clay |
| Location | Zug, Switzerland |
| Champions | |
| Singles | |
 Thiago Seyboth Wild | |
| Doubles | |
 Thijmen Loof /  Kaito Uesugi | |
The 2026 Dialectic Zug Open was a professional tennis tournament played on outdoor clay courts. It was the fifth edition of the tournament and part of the 2026 ATP Challenger Tour. It took place in Zug, Switzerland between 20 and 26 July 2026.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 HUN |
Zsombor Piros | 120 | 1 |
 CHI |
Tomás Barrios Vera | 139 | 2 |
 CZE |
Zdeněk Kolář | 153 | 3 |
 ESP |
Roberto Carballés Baena | 165 | 4 |
 ITA |
Francesco Passaro | 182 | 5 |
 SUI |
Jérôme Kym | 186 | 6 |
 BEL |
|||
 FRA |
Harold Mayot | 200 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw through the Next Gen Accelerator programme:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Thiago Seyboth Wild def. Marc-Andrea Hüsler 6–4, 6–3. Thijmen Loof / Kaito Uesugi def. Andrew Paulson / David Poljak 6–4, 6–2.
