Giovanni Porzio (6 October 1873 – 22 September 1962) was an Italian politician and lawyer.
He graduated at the Vittorio Emanuele II High School in Naples and graduated in law at the University of Naples Federico II, then began his forensic activity by collaborating with the lawyer and scholar Alfonso Ridola, with Alberto Geremicca (who would later was mayor of Naples).
Subsequently, he exercised autonomously and as a brilliant criminal lawyer at the Court of Naples and in Campania, acquiring a reputation that he maintained once he entered the Chamber, in March 1912, remaining among the counters of deputies until 1929.
To his electors he affirmed the necessity of defending the prestige of the state, safeguarding the order by repressing every attempt at violence, be it red or in opposition to it.
For the policies of 1924 he accepted to enter the list, but, disappointed by fascism, he withdrew from politics in 1929.