The Sanremo Music Festival 1973 (), officially the 23rd Italian Song Festival (), was the 23rd annual Sanremo Music Festival, held at the Sanremo Casino in Sanremo between 8 and 10 March 1973, and broadcast by (RAI). The show was presented by Mike Bongiorno, assisted by Gabriella Farinon. Vittorio Salvetti served as artistic director.
The 23rd edition of Sanremo was the first to be broadcast in color. The final night was broadcast by Programma Nazionale, while the first two nights were broadcast live only by radio.
The winner of the festival was Peppino di Capri with the song "Un grande amore e niente più".
The final night was broadcast by Programma Nazionale, while the first two nights were broadcast live only by radio.
Known details on the broadcasts in each country, including the specific broadcasting stations and commentators are shown in the tables below.