Leandro Atilio Romagnoli (born 17 March 1981) is an Argentine former professional footballer who played mainly as an attacking midfielder, currently a manager.

[2][3] Romagnoli started and finished his career with San Lorenzo, but also spent four seasons in Portugal with Sporting CP.

He went on to become an essential attacking player for the side, appearing in roughly 200 official games and winning three major titles;[5] amid the club's financial troubles, he was linked with a move to SV Werder Bremen of the German Bundesliga in summer 2002.

[8] He initially found it difficult to adjust to his new side, but eventually came into his own in the 2006–07 campaign in a superb end-of-season run for both team and player, winning the Taça de Portugal;[9][10] the move was subsequently made permanent.

After having appeared in only 16 matches in 2008–09, being out of favour with manager Paulo Bento,[11][10] Romagnoli left the Estádio José Alvalade in early August 2009 to rejoin San Lorenzo.