The 2024 San Marino Open was a professional tennis tournament played on clay courts. The 31st edition of the tournament, which was part of the 2024 ATP Challenger Tour, took place in City of San Marino, San Marino between 29 July and 4 August 2024.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Italy | Fabio Fognini | 70 | 1 | |
 Argentina | Francisco Comesaña | 99 | 2 | |
 France | Alexandre Müller | 102 | 3 | |
 Spain | Albert Ramos Viñolas | 124 | 4 | |
| Italy | Matteo Gigante | 149 | 5 | |
 Brazil | Gustavo Heide | 155 | 6 | |
| Italy | Andrea Pellegrino | 156 | 7 | |
| Argentina | Juan Manuel Cerúndolo | 157 | 8 |
The following players received wildcards into the singles main draw:
Marco Cecchinato Fabio Fognini Andrea PicchioneThe following player received entry into the singles main draw as a special exempt:
The following player received entry into the singles main draw as an alternate:
Alexander WeisThe following players received entry from the qualifying draw:
Mateus Alves Carlos López Montagud João Lucas Reis da Silva Pedro SakamotoThe following players received entry as lucky losers:
See main article: 2024 San Marino Open – Singles.
Alexandre Müller def. Tseng Chun-hsin 6–3, 4–6, 7–6(7–3).See main article: 2024 San Marino Open – Doubles.
Petr Nouza / Patrik Rikl def. Théo Arribagé / Orlando Luz 1–6, 7–5, [10–6].