Peter Finnerty (1766?–11 May 1822) was an Irish printer, publisher, and journalist in both Dublin and London associated with radical, reform and democratic causes. In Dublin he was a committed United Irishman, but was imprisoned in the course of the 1798 rebellion. In London he was a campaigning reporter for The Morning Chronicle, imprisoned again in 1811 for libel in his condemnation of Lord Castlereagh.