Julio Porter (July 14, 1916 Buenos Aires – October 24, 1979 Mexico City) was an Argentine screenwriter and film director known as one of the most prolific screenwriters and film directors in the history of the Cinema of Argentina.

He wrote the scripts for over 100 films between 1942 and his death. He directed 25 films between 1951 and 1979. His 1967 film Scandal in the Family was entered into the 5th Moscow International Film Festival.