Juan Antonio San Epifanio Ruiz (born 12 June 1959), most commonly known as "Epi",[1][2] is a Spanish retired professional basketball player.

San Epifanio, known by almost everyone as simply, "Epi", grew up in Zaragoza, and began to play the sport of basketball in his native city.

He would eventually go on to lead FC Barcelona to break the long-lived dominance of Real Madrid in Spain.

During his career with the club, his teammates included Nacho Solozábal, Chicho Sibilio, Audie Norris, Juan de la Cruz, Andrés Jiménez, and other well-known players.

Although he reached the FIBA European Champions Cup (EuroLeague) Finals 3 times (1984, 1990, 1991), he never lifted the most important trophy in European-wide club basketball.

With Spain's senior national team, he appeared in a total of 239 games, over a 15-year long period (1979–1994).