Gian Mario Spacca (born 16 February 1953[citation needed]) is an Italian politician who was the president of Marche from 2005 to 2015.

He served on the board of directors of the Aristide Merloni Foundation and was coordinator of cultural activities and research from 1982 to 1990.

From 1993 to 2000 he was Vice President of the Foundation Gioventù Chiesa e Speranza that collaborates in the organization and execution of World Youth Day.

[2] In 1990, he was elected member of the Regional Council of Marche and became Chairman of the Committee on Planning and The Environment.

[4] His candidacy for reelection was also supported by centre-right Forza Italia, but not his former party PD.