Alfredo Stéfano Di Stéfano Laulhé (Spanish pronunciation: [alˈfɾeðo ðjesˈtefano]; 4 July 1926 – 7 July 2014) was an Argentine and naturalised Spanish professional footballer and manager who played as a forward, widely regarded as one of the greatest players of all time. Nicknamed "Saeta Rubia" ("Blond Arrow"), he is best known for his achievements with Real Madrid, where he was instrumental in the club's domination of the European Cup and La Liga during the 1950s and 1960s. Along with Francisco Gento and José María Zárraga, he was one of only three players to play a part in all five European Cup victories, scoring goals in each of the five finals. Di Stéfano played international football mostly for Spain after moving to Madrid and becoming a naturalised citizen, but he also played for Argentina.

Di Stéfano began his career at Argentina's River Plate aged 17, in 1943. For the 1946 season, he was loaned to Huracán, but he returned to River in 1947. He won Copa America in 1947 with Argentina. Due to a footballers' strike in Argentina in 1949, Di Stéfano went to play for Millonarios of Bogotá in the Colombian league. He won six league titles during the first 12 years of his career in Argentina and Colombia. Following his signing by Real Madrid, he was an integral part of one of the most successful teams of all time. He scored 216 league goals in 282 games for Real (then a club record, since surpassed by Raúl, Cristiano Ronaldo and Karim Benzema), striking up a successful partnership with Ferenc Puskás. Di Stéfano's 49 goals in 58 matches was the all-time highest tally in the European Cup. The record has since been surpassed by several players, including the aforementioned Real Madrid trio. Di Stéfano scored in five consecutive European Cup finals for Real Madrid between 1956 and 1960, including a hat-trick in the last. Perhaps the highlight of his time with the club was their 7–3 victory over Eintracht Frankfurt in the 1960 final at Hampden Park, a game many consider to be the finest exhibition of club football ever witnessed in Europe. He moved to Espanyol in 1964 and played there until retiring at the age of 40.

Di Stéfano was awarded the Ballon d'Or for the European Footballer of the Year in 1957 and 1959. He is currently the seventh highest scorer in the history of Spain's top division, and Real Madrid's fourth highest league goalscorer of all time. He is Madrid's leading goalscorer in the history of El Clásico, alongside Cristiano Ronaldo. In November 2003, to celebrate UEFA's Jubilee, he was selected as the Golden Player of Spain by the Royal Spanish Football Federation as their most outstanding player of the past 50 years. He was voted fourth, behind Pelé, Diego Maradona, and Johan Cruyff, in a vote organized by France Football magazine which consulted their former Ballon d'Or winners to elect the Football Player of the Century. In 2004, he was named by Pelé in the FIFA 100 list of the world's greatest living players (in September 2009, he said Di Stéfano was the best player "ever"). In 2008 Di Stéfano was honoured by both UEFA and Real Madrid with a special Presidents' award issued by FIFA at a ceremony in Madrid, where a statue was also unveiled. Then UEFA President Michel Platini called Di Stéfano "a great amongst the greats" while contemporaries Eusébio and Just Fontaine suggested that he was "the most complete footballer in the history of the game".

Born in Barracas, a neighborhood of Buenos Aires, Di Stéfano was the son of Alfredo Di Stéfano, a first-generation Italian Argentine (his father Michele emigrated to Argentina from Capri in the 19th century), and Eulalia Laulhé Gilmont, an Argentine woman of French and Irish descent with her relatives being from Swinford, County Mayo.

Di Stéfano's father, who was a former defender of River Plate (having prematurely retired in 1912 due to a knee injury), introduced young Alfredo to football. Di Stéfano grew up playing street football, in oratories and in neighbourhood teams such as the Barracas "Unidos y Venceremos", and the Imán of the Flores district. People already had noticed his talent. But, in 1940, his family moved to the countryside and Di Stéfano started working with his father and playing football with his brother Tulio for Unión Progresista until 1943, when the family returned to Buenos Aires.

In 1944, Di Stéfano's father wrote a letter of recommendation to River Plate, and the club sent a reply telegram to invite him to an audition with the youth team. Di Stéfano impressed on the trial and joined the second team squad of River Plate, the club his family supported. The next year he became part of the first team which was called La Máquina due to their unprecedented success, consisting of players like Pedernera, Labruna Muñoz, and Loustau. One of the main stars of the team, Moreno, had just left for the Mexican Real Club España and it seemed like a good opportunity for the young Di Stéfano to fight for a place on the first squad.

Di Stéfano, whose idol was Paraguayan Arsenio Erico, the Independiente striker, learned from the big stars, especially Pedernera. His coach and first mentor Carlos Peucelle taught him how to play the ball low and soon he made his first team debut in 1945, at the age of 19: on 15 July of that year he debuted against Huracán in a 2–1 defeat on the twelfth day of the 1945 Argentine championship. This was the only game Di Stéfano played in that year, but at the end of the season he won his first title as River Plate won the championship, four points ahead of Boca Juniors.

During the only match Di Stéfano played in the previous season, the president of Huracán was impressed by his potential; Di Stéfano agreed to join them, as he realised his chances of making the first team for River Plate were limited. Huracán and Argentina legend Herminio Masantonio had just retired and the club needed a replacement forward.