UFC 46: Supernatural was a mixed martial arts event held by the Ultimate Fighting Championship on January 31, 2004, at the Mandalay Bay Events Center in Las Vegas, Nevada. The event was broadcast live on pay-per-view in the United States, and later released on DVD.
Headlining the card was a Light Heavyweight championship bout between Randy Couture and Vitor Belfort. The evening marked the UFC debut of future welterweight champion Georges St-Pierre.
The total fighter payroll for UFC 46 was $540,500.