Iði (Old Norse: in Norse, Old pronounced as /ˈiðe/; also Idi) is a jötunn in Norse mythology. He is the son of Alvaldi and the brother of Þjazi and Gangr.
The Old Norse name Iði has been translated as the 'active one' or the 'hard-working one', deriving from ið ('work'; compare with Norwegian idig and Swedish idog 'hard-working').
In Skáldskaparmál (Language of Poetry), Iði is mentioned as the son of the jötunn Alvaldi, who is "very rich in gold", and as the brother of Þjazi and Gangr: