"Buenos Amigos" ("Good Friends") is a down-tempo, pop ballad duet recorded by Salvadoran recording artist Álvaro Torres and American recording artist Selena for Torres' sixth studio album Nada Se Compara Contigo (1991). The song was released by EMI Latin in 1992, as the album's second single. Its lyrics explore a friendship built on the strong, unrequited feelings of the male narrator. Torres composed "Buenos Amigos" after attending a showcase event at which Selena was performing.

Critics praised the song for being Selena's first number one, while others complimented its ballad-like feeling. According to Billboard, the recording began Selena's career as a dominant Latin chart artist. It was credited for the increased airplay Selena received on regional Mexican and Tejano radio stations, which had previously dismissed her recordings. Selena and Torres were nominated at the 1992 Billboard Music Video Awards and the 1992 Tejano Music Awards. "Buenos Amigos" peaked at number one on the US Billboard Hot Latin Songs chart; it was Torres' second number one in his career, and Selena's first. The single's accompanying music video featured Torres and Selena backed by an orchestra. Cover versions of the song were recordings by Mariana Seoane and Pablo Montero, Tairon and Anaís, and Lucero Terrazas.

"Buenos Amigos" was written by Salvadoran recording artist Álvaro Torres and produced by Enrique Elizondo. After seeing American Tejano pop singer Selena perform at a showcase event, Torres immediately wanted to record a duet with her. He said in Selena Remembered; a documentary about her career, " ... she had an attractive way about her that was always present. We got along very well and a friendship developed from that point on. Several months later I wrote a song which I thought would be good to record a duet with Selena." "Buenos Amigos" was recorded for Torres' tenth studio album Nada Se Compara Contigo (1991).

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