"Si Piensas, Si Quieres" ("If You Think So, If You Want To") is a Latin pop song by Brazilian recording artist Roberto Carlos from his studio Roberto Carlos 1992 (1991). The track was written by Alejandro Vezanni and Roberto Livi, produced by Livi and features vocals by Spanish performer Rocío Dúrcal. It was released as the album's lead single in Latin America and the United States.
The song, about a couple that splits and want to get back together, peaked atop the Billboard 's Latin Songs chart, becoming the third number-one song in the chart for both performers and has been included on several compilation albums. "Si Piensas, Si Quieres" earned a nomination for Latin Pop Song of the Year at the American Society of Composers, Authors and Publishers Awards of 1993.
"Si Piensas, Si Quieres" has been included on several compilation albums released by Carlos and Dúrcal. Following Dúrcal's passing in 2006 the track was added to Una Estrella en el Cielo, a collection of duets recorded by Dúrcal with Juan Gabriel, Julio Iglesias and Joaquín Sabina among others. Also on the albums Amor Eterno: Los Éxitos (2006), Duetos (2009) and Eternamente (2012), released by Dúrcal, the song can be found. Carlos included the track on Pájaro Hérido: Linea Azul, Vol. 10 (2003) and Antología: Todos los Grandes Éxitos (2006).
"Si Piensas, Si Quieres" was released as the lead single from Roberto Carlos 1992. The track debuted in the Billboard Latin Songs chart at number 35 in the week of December 7, 1991 climbing to the top ten two weeks later. "Si Piensas, Si Quieres" peaked at number-one on February 29, 1992, replacing "Inolvidable" by Mexican performer Luis Miguel and being succeeded by "Nada Se Compara Contigo" by Salvadoran singer-songwriter Álvaro Torres, one week later. "Si Piensas, Si Quieres" ended 1992 as the seventh best performing Latin single of the year in the United States and was nominated for Latin Pop Song of the Year at the American Society of Composers, Authors and Publishers Awards of 1993. In November 1999, "Si Piensas, Si Quieres" was labeled as one of the "hottest tracks" for Sony Discos in a list including the most successful songs released by the label since the launching of the Billboard Hot Latin Tracks chart in 1986.