Belgium in the Eurovision Song Contest 1965

Belgium was represented at the Eurovision Song Contest 1965 with the song "Als het weer lente is", composed by Jef van den Berg, with lyrics by Jaak Dreesen, and performed by Lize Marke. The Belgian participating broadcaster, Dutch-speaking Belgische Radio- en Televisieomroep (BRT), selected its entry through a national final, after having previously selected the performer internally. Marke had previously finished second in the 1963 national final.

There was a minor controversy after the selection when it came to light that "Als het weer lente is" had previously been performed on television (by the following year's Belgian representative Tonia), but after some deliberation BRT decided not to disqualify the song, as none of the rules of the European Broadcasting Union in effect at the time regarding song selection had been broken.