Named “Money” for a reason.

The Real Deal reported that Floyd Mayweather bought a Miami Beach mansion for $18 M last week.

The billionaire boasted on Instagram over the weekend that he owns “many homes.”

His properties include a $10 M Las Vegas mansion and a $26 M California house with a wine wall.

“One’s home is their sanctuary, place of peace, relaxation and comfort,” he wrote on Instagram after his Vegas mansion was burgled this year.His latest is a nine-bedroom, 10-half-bathroom home listed for $19.9 M after asking $21.8 M in 2016. Mayweather bought the house through Fojoso LLC.

The three-story, 10,853-square-foot home has a 5,000-square-foot rooftop deck. The listing says it has an indoor movie theater, gym, game room, and entertainment area.

The 0.32-acre Palm Island lot faces Miami across Biscayne Bay. The listing says it has a private dock, pool, tub, stone deck, huge terraces, and 10 car parking.

The 44-year-old boxer sold a Miami Beach house to Barstool Sports founder Dave Portnoy for $6.25 M at a $1.5 M loss, The Post reported.