After the Battle of Lepanto, Andrea Calamech created a bronze statue of Juan, which was erected in Messina in 1572. In his hometown of Regensburg, a copy of this statue has been commemorating Don Juan de Austria since 1978 on Zieroldsplatz east of the town hall.
The Spanish Navy named an unprotected Velasco-class cruiser after Juan de Austria. The Don Juan de Austria was launched in 1887 and was lost to a US Navy squadron in the Battle of Manila Bay in 1898 during the Spanish-American War. Salvaged and repaired after the battle, it served as the gunboat USS Don Juan de Austria in the US Navy from 1900 to 1919.[7]
To this day, a tercio (regiment) of the Legión Española is named after him. It is the Tercio "Don Juan de Austria", 3° de la Legion, stationed in the small town of Viator in the province of Almería, where the majority of the units of the Spanish Legion are stationed and where their headquarters are located.
In 1946, a Spanish sailing ship was to be named after Don Juan de Austria, and was laid down under this name, but upon completion in 1952, it was delivered to Chile as Esmeralda because Spain was in arrears with payments for saltpeter. The Esmeralda now serves as a sailing training ship.
Source: Wikipedia