| Date: | August 16–22 |
| Edition: | 3rd |
| Location: | San Sebastián, Spain |
| Champs: |  Albert Ramos Viñolas |
| Champd: | Rubén Ramírez Hidalgo / Santiago Ventura |
The 2010 Concurso Internacional de Tenis – San Sebastián was a professional tennis tournament played on outdoor red clay courts. It was the third edition of the tournament which is part of the 2010 ATP Challenger Tour. It took place in San Sebastián, Spain between 16 and 22 August 2010.
| Nationality | Player | Ranking* | Seeding | |
|---|---|---|---|---|
| Spain | Pere Riba | 76 | 1 | |
| Spain | Rubén Ramírez Hidalgo | 93 | 2 | |
| Spain | Pablo Andújar | 113 | 3 | |
| Julian Reister | 117 | 4 | ||
| Spain | Santiago Ventura | 122 | 5 | |
 Kazakhstan | Yuri Schukin | 124 | 6 | |
| Spain | Albert Ramos Viñolas | 136 | 7 | |
| Denis Gremelmayr | 141 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Baptiste Dupuy Marc Fornell Mestres
Gianluca NasoSee main article: 2010 Concurso Internacional de Tenis – San Sebastián – Singles. Albert Ramos Viñolas def. Benoît Paire, 6–4, 6–2
See main article: 2010 Concurso Internacional de Tenis – San Sebastián – Doubles. Rubén Ramírez Hidalgo / Santiago Ventura def. 
Brian Battistone / 
Andreas Siljeström, 6–4, 7–6(3)