Kanye West announcing the change on Twitter on Saturday, wrote: “The being formally known as Kanye West. I am YE.”
West, 41, has been nicknamed Ye for some time and used the moniker as the title for his eighth album, which was released in June.
The change comes ahead of his appearance on Saturday Night Live, where he is expected to launch his new album Yandhi.
As well as being an abbreviation of his current professional name, West has previously said the word has religious significance for him.
“I believe ‘ye’ is the most commonly used word in the Bible, and in the Bible it means ‘you,'” West said earlier this year, discussing his album title with radio host Big Boy.
“So I’m you, I’m us, it’s us. It went from Kanye, which means the only one, to just Ye – just being a reflection of our good, our bad, our confused, everything. The album is more of a reflection of who we are.”