The Google Inc.-owned YouTube declined to comment. It's YouTube policy to remove accounts after three copyright violations, though they can be restored after being corrected.
Reports have suggested that the infringing video was a recently uploaded clip of Gaga's performance on Fuji TV. Messages left with Gaga's publicist and record label weren't immediately returned Thursday.
The account is one of two for Gaga. The removed channel is run by Gaga's camp, while she also has an unaffected Vevo account. That account, which has more than 1.6 billion views, generally debuts her music videos.