The singer's YouTube was restored late Thursday.
A notice on the account said it was suspended because of "multiple or severe violations of YouTube's copyright policy."
The company didn't offer any public information about the violations, although some have speculated that the problem may have been a clip of the singer's recent performance on Fuji TV.
The account, ladygagaofficial, is one of two for Gaga. The removed channel is run by Gaga's camp, while she also has an unaffected Vevo account.
The Vevo account, which has more than 1.6 billion views, generally debuts her music videos.
Lady Gaga's publicist and record label did not return calls for comment.
The Associated Press contributed to this report.