The Eurovision Song Contest 1965 was the tenth edition of the annual Eurovision Song Contest. It took place in Naples, Italy, following the country's victory at the 1964 contest with the song "Non ho l'età" by Gigliola Cinquetti. Organised by the European Broadcasting Union (EBU) and host broadcaster Radiotelevisione italiana (RAI), the contest was held at Sala di Concerto della RAI on 20 March 1965, and was hosted by Italian singer Renata Mauro.

The Eurovision Song Contest, often known simply as Eurovision, is an international song competition organised annually by the European Broadcasting Union. Each participating country submits an original song to be performed live and transmitted to national broadcasters via the Eurovision and Euroradio networks, with competing countries then casting votes for the other countries' songs to determine a winner.