Efraín Juárez Valdez is a Mexican footballer who plays as a defensive midfielder or right back.
On 17 July 2010, Pumas accepted a bid for Juárez from Celtic. On 26 July a £6 million transfer was agreed and Juárez signed a four-year contract with The Hoops, making him the first ever Mexican player to play in the SPL. Juárez made his Celtic debut in a 3–0 Champions League defeat away to Braga. He scored his first goal for the club in the return fixture at Celtic Park with a header. He then scored his second goal, again at Celtic Park, in a Europa League qualifying first leg match against Utrecht two weeks later.