Helgason is a surname of Icelandic origin, meaning son of Helgi.^{[citation needed]} In Icelandic names, the name is not strictly a surname, but a patronymic. The name may refer to:

• Agnar Helgason (born 1968), Icelandic scientist; researcher in genetic anthropology
• Árni Helgason (1260–1320), Icelandic Roman Catholic clergyman; Bishop of Iceland 1304–20
• Asgeir Helgason (born 1975), Icelandic scientist; working in Sweden
• Auðun Helgason (born 1974), Icelandic professional football player
• Einarr Helgason (fl. 10th century), Icelandic skald (Old Norse poet)
• Hallgrímur Helgason (born 1959), Icelandic artist and author
• Jóhannes Helgason (born 1958), Icelandic guitar player and airline pilot
• Jón Helgason (poet) (1899–1986), Icelandic philologist and poet
• Jón Helgason (minister) (born 1931), Icelandic politician and former minister
• Sigurdur Helgason (airline executive), Icelandic airline innovator
• Sigurdur Helgason (mathematician) (1927–2023), Icelandic mathematician
• Tomrair mac Ailchi (Thorir Helgason), tenth-century Viking king of Limerick
• Halldor Helgason (born 1991), Icelandic professional snowboarder