Winners of the 2005 Billboard Music Awards:

Source: Billboard.com

• Billboard Century Award: Tom Petty
• Artist Achievement Award: Kanye West
• Artist of the Year: 50 Cent
• New Artist of the Year: Gwen Stefani
• Album of the Year: "The Massacre," 50 Cent (Shady/Aftermath/Interscope)
• Billboard 200 Album Group of the Year: Green Day
• Female Billboard 200 Album Artist of the Year: Mariah Carey
• Pop Group of the Year: Green Day
• Hot 100 Artist of the Year: 50 Cent
• Hot 100 Group of the Year: Green Day
• Hot 100 Song of the Year: "We Belong Together," Mariah Carey (Island)
• Hot 100 Airplay of the Year: "We Belong Together," Mariah Carey (Island)
• Top-Selling Hot 100 Song of the Year: "Inside Your Heaven/Independence Day," Carrie Underwood (Arista)
• Rhythmic Top 40 Title of the Year: "We Belong Together," Mariah Carey (Island)
• R&B/Hip-Hop Artist of the Year: 50 Cent
• Female R&B/Hip-Hop Artist of the Year: Mariah Carey
• R&B/Hip-Hop Group of the Year: Destiny's Child
• R&B/Hip-Hop Song of the Year: "Let Me Love You," Mario (3rd Street/J)
• R&B/Hip-Hop Airplay Song of the Year: "Let Me Love You," Mario (3rd Street/J)
• Rap Artist of the Year: 50 Cent
• Rap Song of the Year: "Lovers & Friends," Lil Jon & the Eastside Boyz featuring Usher & Ludacris (TVT)
• Rock Artist of the Year: Green Day
• Rock Song of the Year: Boulevard of Broken Dreams," Green Day (Reprise)
• Modern Rock Artist of the Year: Green Day
• Ringtone of the Year" "Candy Shop," 50 Cent featuring Olivia (Shady/Aftermath/Interscope)
• Digital Song of the Year: "Hollaback Girl," Gwen Stefani (Interscope)
• Country Artist of the Year: Toby Keith
• Country Album Artist of the Year: Toby Keith
• Country Single Sales Artist of the Year: Carrie Underwood
• Top-Selling Country Single of the Year: "Inside Your Heaven/Independence Day," Carrie Underwood (Arista)
• Latin Album Artist of the Year: Daddy Yankee
• Latin Album of the Year: "Barrio Fino," Daddy Yankee (El Cartel/Machete)
• Latin Song of the Year: "La Tortura," Shakira featuring Alejandro Sanz (Epic)
• Latin Pop Album of the Year: "Fijacion Oral Vol. 1," Shakira (Epic)
• Latin Pop Album Artist of the Year: Shakira
• Comedy Artist of the Year: Larry the Cable Guy
• Comedy Album of the Year: "The Right to Bare Arms," Larry the Cable Guy (Jack/Warner Bros.)