Even on vacation, Miami Marlins superstar Giancarlo Stanton can't stop thinking about his teammate Jose Fernandez ... and paid tribute to the late pitcher with some graffiti art in Brazil.
Stanton -- along with teammate A.J. Ramos and L.A. Angels pitcher Ricky Nolasco -- teamed up with street artist Tito Na Rua and transformed a wall in Rio to a colorful memorial to "Nino."
All three players signed their names and jersey numbers on the art which features the word, "Saudades" ... which is a Brazilian saying that loosely translates to "a feeling of longing."
Fernandez died in a boating accident in Miami last month -- he was only 24.