Poppa of Bayeux (French: [pɔpa d(ə) bɛjø]; born c. 880) was the wife more danico[2][3] of the Viking leader Rollo.

She was the mother of William I Longsword, Gerloc[4][5] and grandmother of Richard the Fearless, who forged the Duchy of Normandy into a great fief of medieval France.

[6] Dudo of Saint-Quentin, in his panegyric of the Norman dukes, describes her as the daughter of a "Count Berengar", the dominant prince of that region, who was captured at Bayeux by Rollo in 885 or 889, shortly after the siege of Paris.

[1] Katherine Keats-Rohan states she was the daughter of Berengar II of Neustria by Adelind, whose father was Henry, Margrave of the Franks, or Adela of Vermandois.

[2] Her parentage is uncertain and may have been invented after the fact to legitimize her son's lineage, as many of the fantastic genealogical claims made by Dudo were.