A Los Angeles judge granted the rapper's name change request, a communications officer at the Los Angeles Superior Court confirmed.
The 44-year-old star filed the request in August, citing "personal reasons."
The rapper, best known for hits such as Gold Digger and Stronger, already used Ye as a nickname and in 2018 used it as an album title.
Shortly after the album's release, he tweeted: "The being formally known as Kanye West. I am YE."
Now he's made it official and his previous full name - Kanye Omari West - is no more.