Rubens Oscar Sambueza (born 1 January 1984) is an Argentine former professional footballer who played as an attacking midfielder.

For the Apertura 2007–2008 tournament, Sambueza was sent on-loan to Mexico side UNAM Pumas, being presented as their number 11, which was worn by legendary player Hugo Sánchez.

He played fourteen games in total, providing two assists and scoring two goals that season, against UANL Tigres, and most notably against Pachuca, which led UNAM to the playoffs, eventually losing in the final against Atlante F.C.

He was assigned with the number 10 shirt,[4] previously worn by club legend Zico, and vacant after Renato Augusto's transfer to Bayer Leverkusen.

On 31 August he debuted for Flamengo as a substitute for Éverton in the Fla-Flu derby, when his club and Fluminense drew 2–2 for the Campeonato Brasileiro Série A.

[8] On 30 May 2012 it was confirmed that Sambueza was transferred to América, reuniting him with his former manager whilst at Estudiantes Tecos, Miguel Herrera.

[20] Three days later, Sambueza would have a Man of the match performance, assisting Raúl Jiménez and scoring off a free-kick in the 3–0 victory over Atlas.

[23] On 5 October, Sambueza assisted Raúl Jiménez in scoring the first goal in the 2–0 victory in the Súper Clásico match against Guadalajara.