Julián Alonso Pintor (born 2 August 1977) is a retired tennis player from Catalonia, Spain, who turned professional in 1995 and retired in 2003.
He was known in tennis because of his powerful serve, compared with the Goran Ivanisevic´s service.
In 1997, playing against Ivanisevic (2nd seeded), in Long Island, beat him for first Top 10 victory en route to semifinal and in that match fired a 143 mph serve to become just third player (Philippoussis, Rusedski) to register a serve of at least 143.
He is the founder of "Julian Alonso Team" Academy located in Palm Beach, FL focusing on junior development.
Married to Arantxa Vivanco and father of two children.