France was represented by Guy Mardel, with the song '"N'avoue jamais", at the 1965 Eurovision Song Contest, which took place on 20 March in Naples, Italy.. The song was chosen internally by broadcaster ORTF.

"N'avoue jamais" became a major hit in Francophone music markets, and remains one of the better-remembered French entries of the 1960s.

On the night of the final Walter performed 11th in the running order, following Sweden and preceding Portugal. Each national jury awarded 5-3-1 to its top three songs, and at the close of voting "N'avoue jamais" had picked up 22 points (5 from Monaco and Yugoslavia, 3 from Germany, Luxembourg and Spain, and 1 from Finland, Ireland and the Netherlands), placing France third of the 18 entries and maintaining the country's unbroken run of top 5 finishes dating back to 1957 when full results were first given. The French jury awarded its 5 points to Switzerland.

...
Wikipedia