The rapper heaped praise on his spouse following her comeback shows at the Revel Casino in Atlantic City this weekend.
"I'm gonna say this and then I'm gonna end mine," Jay-Z tweeted. "BEYONCE is the best performer in the world. Period."
The singer opened her set with a tribute to Whitney Houston by performing 'I Will Always Love You', before singing her own hit 'Halo'.
The star also paid homage to the late Donna Summer during a rendition of 'Naughty Girl', which samples the disco star's 'Love to Love You Baby'.
The headline show at the multi-billion dollar resort marked Beyoncé's first live set since giving birth to her daughter Blue Ivy in January.
Watch Beyoncé perform her single 'Crazy In Love' live at the Revel Casino below: