Francesco Domenico Guerrazzi (12 August 1804 – 25 September 1873) was an Italian writer and politician involved in the Italian risorgimento.
Guerrazzi was born in the seaport of Livorno, then part of the Grand Duchy of Tuscany. He studied law at the university of Pisa, graduating in 1824. He began to practice in Livorno, but soon gave up law in favour of politics and literature, being particularly influenced by Byron, to whom he dedicated his "Stanze" (1825). His first novel, La Battaglia di Benevento was published in 1827.
Giuseppe Mazzini made his acquaintance, and in 1829, together with Carlo Bini, they started a newspaper, L'Indicatore Livornese, at Livorno. The authorities of the Grand Duchy of Tuscany suppressed the periodical in February 1830 after 48 issues.