Ruben Filipe Marques Amorim (born January 27, 1985 in Lisbon) is a Portuguese professional footballer who currently plays as midfielder for S.L. Benfica, in the Portuguese first division.

His style is similar to countryman Tiago, with both playing the same position, operating in central midfield, both defensive and offensive.
Amorim made his debut in the Portuguese first division on December 14, 2003, playing one minute for hometown's CF Os Belenenses in a 2-0 home win over Alverca FC. From 2005-06 onwards, he became a cornerstone for the squad in which youth system he grew.

In 2007, Amorim appeared with the Portuguese under-21s at the European Championship in Holland. During this period, several clubs showed interested in his services, but he insisted on not leaving, with Belenenses also rejecting bids from SL Benfica, Sporting Braga, FC Porto, Schalke 04, Tottenham Hotspur and Toulouse FC.

In late April 2008, Amorim signed a four-year deal with Benfica, after his Belenenses link ran out. During his first season, he was an undisputed starter, scoring his first goal with the Reds on November 23, in a 2-0 win at Académica de Coimbra.