In Norse mythology, ÃÂrÃÂvaldi (anglicized as ThrÃÂvaldi or Thrivaldi), whose name means "thrice mighty", is a jötunn killed by Thor.
This fact is mentioned by Snorri Sturluson in the Skáldskaparmál <small>(4)</small>, according to which "killer of ÃÂrÃÂvaldi" ("vegandi ÃÂrÃÂvalda") is a kenning for Thor. Snorri quotes one stanza by Bragi Boddason, who calls Thor "cleaver apart of ÃÂrÃÂvaldi's nine heads" ("sundrkljúfr nÃÂu höfða ÃÂrÃÂvalda"), and another stanza by Vetrliði Sumarliðason who praises Thor for having battered ("lemja") ÃÂrÃÂvaldi.
ÃÂrÃÂvaldi is also listed in the þulur.