Belgium was represented at the Eurovision Song Contest 1965 with the song "", composed by Jef van den Berg, with lyrics by Jaak Dreesen, and performed by Lize Marke. The Belgian participating broadcaster, Dutch-speaking (BRT), selected its entry through a national final, after having previously selected the performer internally. Marke had previously finished second in the .
There was a minor controversy after the selection when it came to light that "" 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.
In December 1964, Dutch-speaking broadcaster (BRT) announced that they had internally selected Lize Marke to represent Belgium in the Eurovision Song Contest 1965.
====== was the national final format developed by BRT in order to select the Belgian entry for the Eurovision Song Contest 1965.
Following the announcement of Marke as Belgian representative, a song submission period was opened, in which composers were able to submit their songs until 10 January 1965. BRT received 250 songs by the closing of the deadline, from which six were selected for the national final. The national final originally had eight songs, but two of them were dropped before rehearsals for unknown reasons.
The final was held on 13 February 1965 at 20:50 CET at the Amerikaans Theater in Brussels and was hosted by Nand Baert. Six songs competed in the contest with the winner being decided upon by a 20-member jury, 10 members of which were "professionals", while another 10 were representatives of the Dutch-speaking public.
On the evening of the final Marke performed 8th in the running order, following and preceding . Voting was by each national jury awarding 5, 3 and 1 points to its three favourite songs. At the close of the voting "" was one of four songs (along with the entries from , , and ) which had failed to register a single point. This was the third time that Belgium had found itself at the foot of the Eurovision scoreboard, and the second (and to date last) time the country had finished with nul-points.
The Belgian jury vote was unique under this system, as only two songs had received any votes at all from the 10 jury members. Under the rules then in effect, this meant that they awarded 6 points (rather than the apparent maximum 5) to the and 3 points to .
The contest was broadcast on BRT and RTB. It was also broadcast on radio station .
Belgium did not receive any points at the Eurovision Song Contest 1965.