The 2020 San Marino and Rimini Riviera motorcycle Grand Prix (officially known as the Gran Premio Lenovo di San Marino e della Riviera di Rimini) was the seventh round of the 2020 Grand Prix motorcycle racing season and the sixth round of the 2020 MotoGP World Championship.

Several Grands Prix were cancelled or postponed after the aborted opening round in Qatar, prompting the Fédération Internationale de Motocyclisme to draft a new calendar.

However, the San Marino and Rimini Riviera Grand Prix was not impacted by this change and kept its original date.

The first practice session ended with Maverick Viñales fastest for Monster Energy Yamaha MotoGP ahead of Petronas Yamaha SRT's Fabio Quartararo and Aprilia Racing Team Gresini's Aleix Espargaró.

The second practice session ended with Quartararo fastest, followed by Franco Morbidelli and Pol Espargaró.