Diego Martín Vásquez Castro (born 3 July 1971) is an Argentine football coach and former player who is the manager of Honduran club Motagua.

[2] He began his career playing for his hometown club San Martín de Mendoza.

[4] According to Diego, his most memorable event as a player took place in the final series of the 1999–2000 Honduran Liga Nacional season against Club Deportivo Olimpia where after a 0–0 global score, the title had to be decided by penalty shoot-outs in which Vásquez saved the decisive kick to give Motagua its 8th national championship.

[7] The first achievement under his management occurred only a year after in the 2014–15 season, a success which represented Motagua's 13th national title.

[8] In his first shot as a manager, he already owns the accomplishment of having over 300 consecutive games leading a Honduran Liga Nacional club as a coach, surpassing Carlos Padilla, also with Motagua.