Horacio Daniel Rosatti (born 11 August 1956) is an Argentine lawyer, politician and a member of the Supreme Court of Argentina since 2016, designated by president Mauricio Macri's and the Senate's approval.

[1] In September 2021 he was elected President of the court by his peers, and took office on 1 October.

[2] As a politician, for the Justicialist Party, he served as Mayor of Santa Fe from 1995 to 1999, as Procurator of the Treasury of the Nation from 2003 to 2004, and then as Minister of Justice when the president Néstor Kirchner appointed him to the position between 2004 and 2005.

[5] From 1999 to 2002, he was dean of the Universidad Católica de Santa Fe (UCSF) Faculty of Law.

At the post-graduate level, he has taught courses on constitutional and public law at the Universidad Austral and the National University of Rosario.