The 29-year-old R&B star, who is pregnant with her first child, and Beatz exchanged vows in a small ceremony in a private home on the Mediterranean Sea, the celebrity magazine reported.
The magazine's web site had a picture of the couple, showing Keys wearing a cream Grecian-style dress and Beatz wearing a tuxedo. The couple has been together since 2008.
Keys has won 12 Grammy awards since releasing her first album "Songs In A Minor" in 2001. She released her fourth studio album, "The Element of Freedom", last year. Beatz, whose real name is Kasseem Dean, is working on his third album.
(Reporting by Lisa Baertlein; editing by Jill Serjeant)