Antonio Bonfatti (born December 1, 1950) is an Argentine physician and Socialist politician who served as Governor of Santa Fe between 2011 and 2015.

There, he developed an interest in politics, and in 1972, co-founded the Popular Socialist Party with activists Guillermo Estévez Boero and Hermes Binner.

He would remain in Las Parejas, working as a physician in a provincial SAMCo clinic and for the Steelworkers' Union in the field of occupational medicine.

Bonfatti streamlined the bureaucratic and electoral process in the province during his tenure, and was endorsed by Binner as candidate for governor in 2011 on the Progressive, Civic, and Social Front, whose nomination he sought without opposition.

[3] He was elected governor on July 24 with nearly 40% of the vote; followed by Republican Proposal candidate, actor Miguel del Sel, with 36%; and Congressman Agustín Rossi of the FpV, with 23%.