Ulfsson is a Scandinavian patronym and a surname. Notable people with the name include:
Gunnbjörn Ulfsson (Norwegian, lived circa 10th century), the first European to sight North America Jakob Ulfsson (died 1521), Archbishop of Uppsala, Sweden, 1469–1515 and founder of Uppsala University Karl Ulfsson, Lord of Tofta (ca. 1317 – 1407-11), Swedish magnate and High Constable of Sweden Ragnvald Ulfsson (beginning 11th century) was a jarl of Västergötland or Östergötland Sveinn Ulfsson (1019–1074), King of Denmark from 1047 until his death in 1074
See also Usson (disambiguation)