Beatrice d'Avesnes (died: 1321) was a daughter of Baldwin of Avesnes and his wife Felicitas of Coucy.^[1] Baldwin was the son of Bouchard IV of Avesnes. In 1310, she founded Beaumont Abbey.^[2]

Beatrice married, in 1265, Count Henry VI of Luxembourg^[3] and was the mother of:

• Henry VII (1274–1313), Count of Luxemburg, King of the Romans in 1308 and Emperor in 1312.^[2]
• Walram (d. 1311), Lord of Dourlers, Thirimont en Consorre
• Felicitas (d. 1336),^[2] married in 1298 John Tristan (d. 1309), Count of Leuven
• Baldwin (1285–1354), Archbishop of Trier (1307–1354)
• Margaret (d. 1336), a nun in Lille and in Marienthal.