Eyþór Ingólfsson Melsteð (transliterated as Eythor Ingolfsson Melsted in English, born 16 February 1994) is an Icelandic professional strongman from Reykjavík and a multiple entrant to the World's Strongest Man competition.

In 2019 he made his international debut at the Strongman Champions League Norway, and proceeded to qualify for the World's Strongest Man finals on two consecutive occasions in 2021 and 2022.

[3] He also secured podium finishes in both the 2021 and 2022 Magnús Ver Magnússon Strongman Classic, the 2020 Pasaulio Taurė,[2] and was a finalist at the World's Ultimate Strongman, Rogue Invitational[4] and Europe's Strongest Man competitions.

His log press of 190 kg (419 lb) is the 3rd heaviest by an Icelander, only behind Hafþór Júlíus Björnsson and Sigfús Fossdal.

Eyþór is married to Ásrún Ösp Vilmundardóttir, an Icelandic IFBB professional women's figure competitor.