The Sanremo Music Festival 1959 (), officially the 9th Italian Song Festival (), was the ninth annual Sanremo Music Festival, held at the Sanremo Casino in Sanremo between 30 January and 1 February 1959, and broadcast by (RAI). The show was presented by Enzo Tortora and Adriana Serra.
According to the rules of this edition every song was performed in a double performance by a couple of singers or groups, with some artists performing multiple songs. The winner of the festival was "Piove (Ciao, ciao bambina)", performed by Domenico Modugno (who was also the composer of the song) and Johnny Dorelli. The couple had already won the previous edition of the festival with "Nel blu, dipinto di blu". Modugno went on to perform the song for at the Eurovision Song Contest 1959.
All shows were broadcast on Italian Television and Secondo Programma, beginning at 22:00 CET (21:00 UTC).
Known details on the broadcasts in each country, including the specific broadcasting stations are shown in the tables below.