The 26-year-old, who is currently on tour to New Zealand to promote her second album "Born This Way", disclosed the news to her fans on micro-blogging site Twitter.
"Exciting news little monsters! I've played my new record for my label and will be announcing my new Album title in September! X," Gaga tweeted. "Just insane, great records.
She's on tour right now, but it's just going to be a great record. Look out for the unexpected, when it comes to her. I'm very excited," added Gaga's co-manager, Vincent Herbert.