Musiq'3 is a Belgian public-service radio station operated by RTBF. Its output is centred on classical music. The current director is Bernard Meillat.
The channel first went on air – as the Troisième Programme of the then existing RTB (Radio-télévision belge, RTB) – on 1 October 1961. Later known as Radio Trois in the late 70's and Musique 3 in October 1994, the channel's present branding, Musiq'3, was adopted in March 2004 as part of the overall restructuring of RTBF's radio services which took place in that year.