Ignazio Batolo, commonly known as Pietro Bachi, (1787, in Palermo – 22 August 1853, in Boston) was a Sicilian American academic and professor.

In 1815, he was involved in an attempt aimed at promoting the claim of Joachim Murat to the throne of the Two Sicilies.

As a result of this attempt against the House of Bourbon he was forced to change his name with the alias of Pietro Bachi and escape to England and then to the United States.

In 1826, he became professor of Italian, Spanish and Portuguese language at Harvard University and kept this assignment until 1846.

Pietro Bachi was born in Palermo in 1787 under the name of Ignazio Batolo to Salvatore Batolo,[1]an important magistrate who served as Procuratore Generale del Re at the Grand Civil Court of Palermo and Judge of the Supreme Court of Sicily, of Messina origin[2].