Blacasset, Blacassetz, Blacssetz, or Blachessetz (fl. 1233–1242^[1]) was a Provençal troubadour of the noble family of the Blacas, lords of Aulps, in the Empire. He was probably a son of the troubadour Blacatz, as his vida alleges, though this has come into doubt.^[1][2] He was also distantly related to Charles I of Naples and Raymond Berengar IV of Provence.^[2] According to his vida, he was like his father in merit, good deeds, and munificence, and also reputed to be a good lover.^[2]

"Blacasset" is a diminutive of his father's name (Latin: Blacacius). A document of 1238 (two years after his father's death) mentions three sons of the elder Blacatz, two of which were named Blacacius.^[1] Blacasset was not a professional troubadour, but, like his father, an amateur.^[1] Eleven of his works survive, three sirventes, four cansos, and four coblas, including one single-stanza canso with a melody in F major, Ben volgra quem venques merces.^[1] This song was appended to a manuscript of the chansonnier du roi of Theobald I of Navarre in the early fourteenth-century.^[3] Among his other works are:

• A Lunel lutz una luna luzens, a tenso with Guilhem de Montanhagol in the trobar clus style about a lady, Guiza (Gauzeranda) de Lunel
• Lo bels douz temps mi platz, a sirventes he wrote for the conte de Proensa (count of Provence)^[4]
• De guerra fi desiros^[4]
• Mos voler es quez eu m' eslanz^[4]