The 2011 Billboard Music Awards were held May 22, 2011 at the MGM Grand Garden Arena in Las Vegas, Nevada and hosted by Ken Jeong. The awards recognized the most popular artists and albums from 2010.

Overall, critics praised the performances in whole. Critics, however, noted Beyoncé as the standout performer of the night. However, some controversy was generated from the show. The Parents Television Council criticized Rihanna and Britney Spears's Performance of S&M (Remix), calling it "explicit", with PTC president saying "I cannot imagine what would possibly lead the ABC television network to air a profanity-laced, S&M sex show on primetime broadcast television", while criticizing the choice to air the performance first, on what they claim is a normally family targeted time slot (the show aired at 8:00 p.m.).

The Billboard Music Award is an honor given by Billboard magazine, the preeminent publication covering the music business. The Billboard Music Awards show had been held annually in December until it went dormant in 2007, but it returned in May 2011.Janet Jackson has won the most awards.

Unlike other awards, such as the Grammy Award, which determine nominations as a result of the highest votes received, the Billboard Music Awards finalists are based on United States year-end chart performance according to Nielsen data for sales, number of downloads and total airplay. Awards were given for the top album/artist/single in different genres. Since 1992, the awards also give out a Billboard Century Award—the magazine's highest honor for creative achievement and named for Billboard's centennial in 1994. The award was renamed the Icon Award in 2011.

From 1989–2006, the show had the same categories and category names every year. In 2011, for the first time, all of the awards were renamed to "Top [award title]". The "of the year" portion of each category title no longer exists, and many of the awards have been further renamed. Other awards, including both "crossover" awards (No. 1 Classical Crossover Artist and No. 1 Classical Crossover Album) were discontinued.

Britney Jean Spears (born December 2, 1981) is an American recording artist and entertainer. Born in McComb, Mississippi, and raised in Kentwood, Louisiana, Spears began performing as a child, landing acting roles in stage productions and television shows. She signed with Jive Records in 1997 and released her debut album ...Baby One More Time in 1999, which became the best-selling album by a teenage solo artist. During her first decade in the music industry, she became a prominent figure in mainstream popular music and popular culture, followed by a much-publicized personal life. Her first two albums established her as a pop icon and broke sales records, while title tracks "...Baby One More Time" and "Oops!... I Did It Again" became international number-one hits. Spears was credited with influencing the revival of teen pop during the late 1990s, and became the 'best-selling teen aged artist of all time' before she turned 20, garnering her the honorific title of "Princess of Pop".

Justin Drew Bieber ( /ˈbiːbər/ BEE-bər, born March 1, 1994) is a Canadian Pop/R&B singer-songwriter, musician, and actor. Bieber was discovered in 2008 by Scooter Braun, who came across Bieber's videos on YouTube and later became his manager. Braun arranged for him to meet with Usher in Atlanta, Georgia, and Bieber was soon signed to Raymond Braun Media Group (RBMG), a joint venture between Braun and Usher, and then to a recording contract with Island Records offered by L.A. Reid. Bieber's debut single, "One Time", was released in 2009 and peaked in the top twenty in Canada and charted in the top thirty in several international markets. His debut album, the seven-track EP My World, followed in November 2009, and was soon certified platinum in the United States. He became the first artist to have seven songs from a debut album chart on the Billboard Hot 100.