| 2025 Crete Challenger III | |
|---|---|
| Date | 11 – 16 August |
| Edition | 3rd |
| Surface | Hard |
| Location | Hersonissos, Greece |
| Champions | |
| Singles | |
 Rafael Jódar | |
| Doubles | |
 Filippo Moroni /  Stuart Parker | |
The 2025 Crete Challenger III was a professional tennis tournament played on hard courts. It was the third edition of the tournament which was part of the 2025 ATP Challenger Tour. It took place in Hersonissos, Greece between 11 and 16 August 2025.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| GBR | George Loffhagen | 229 | 1 |
 CZE | Marek Gengel | 250 | 2 |
 FRA | Matteo Martineau | 269 | 3 |
 CHN | Cui Jie | 298 | 4 |
 GRE | Stefanos Sakellaridis | 317 | 5 |
| FRA | Dan Added | 340 | 6 |
 USA | Christian Langmo | 351 | 7 |
 JOR |
The following players received wildcards into the singles main draw:
Pavlos Tsitsipas Petros Tsitsipas Ioannis XilasThe following player received entry into the singles main draw using a protected ranking:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Luca Castagnola Pietro Fellin
Ilya Ivashka 
Orel Kimhi
Péter Makk Théo Papamalamis The following player received entry as a lucky loser:
Rafael Jódar def. Dan Added 6–4, 6–2. Filippo Moroni / Stuart Parker def. Dan Added / Arthur Reymond 6–4, 6–4.