"Bigger" is a song by Canadian recording artist Justin Bieber, included as a track on his debut release, My World, released on November 17, 2009. It was written by Bieber, Frank Ocean, Dapo Torimiro, Kevin Risto and Waynne Nugent of Midi Mafia, with the latter duo and Dapo producing the song. Musically, the song is a R&B number which infuses elements of teen pop and dance-pop, while including influences of new jack swing. The song's lyrics refer to one maturing in a relationship and working to reach goals. The song received generally positive reception from critics who reviewed the album, with a Billboard reviewer commenting that Bieber had "genuine swagger" on the song. Some reviews however questioned the lyrical content. After the release of My World, due to digital sales, the song charted in the lower regions of charts in the United States, Canada, the United Kingdom, and Japan.

"Bigger" was co-written by Bieber, Odd Future collective member Frank Ocean, Dapo Torimiro, Kevin Risto and Waynne Nugent of Midi Mafia. (Midi Mafia also worked with Bieber on the ballad "Down To Earth") Midi Mafia and Dapo have production credits. It was recorded at Icon Studios in Atlanta, Georgia, and it was mixed at Larrabee Studios in North Hollywood, California. The track was one of three songs on the standard edition of the album that Bieber co-wrote.

"Bigger", described as moderately fast, is a R&B song with a length of three minutes and seventeen seconds, with inclinations toward teen pop and dance-pop. According to a review of My World by Jon Caramanica of The New York Times, the song is influenced by new jack swing, as well as the music of Guy. The song is set in common time, and has a tempo of 104 beats per minute. It is written in the key of C minor, and Bieber's vocals do not deviate far, only spanning from the low note of C₄ to the high note of E₅. It features the chord patterns Cm₁₁ and Fm₉. The song's lyrics see the protagonist professing to their love interest how they have matured, in lines such as "I was a player when I was little, but I'm bigger." Lyrically, the song also speaks of rebuffing anyone that comes in between his reaching goals, in lines like "And all the haters I swear they look so small from up here..."

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