Jaime Alguersuari Sr.
Jaime Alguersuari Tortajada, is a Spanish former Grand Prix motorcycle racer. He is the father of ex-Formula One driver Jaime Alguersuari.
He won the 250 cc category at the 1972 Bol d'Or at Le Mans on a Montesa.
In 1975, he and his brother José Maria founded the Solo Moto magazine. Through his companies Alesport and RPM, he invented indoor trial and endurocross with events at the Palau Sant Jordi in Barcelona. In addition to motorcycling events, RPM has organized the World Series by Renault, the Barcelona Marathon, the Spanish stages of the Rally Dakar, and the Superprestigio Dirt Track.
Motorcycle Grand Prix results
| Year | Class | Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Points | Rank |
| 1973 | 50cc | Derbi | GER | NAT 7 | YUG | NED | BEL | SWE | ESP | 4 | 16th | |
| 1975 | 50cc | Derbi | ESP 7 | GER | NAT | NED | BEL | SWE | FIN | YUG | 4 | 18th |