"Boom" is a song by American rock band P.O.D. It was released in May 2002 as the third single from their second major label studio album Satellite. While it did not chart as well as the album's previous singles, the song has appeared significantly in film and television. "Boom (The Crystal Method remix)" was included on the remix album Community Service and as a bonus track on the special edition re-release of Satellite available August 27, 2002. A limited edition, gatefold picture disc of the single was also available in the UK.

Following the September 11, 2001 attacks, "Boom" was the only P.O.D. song included on the list of songs deemed inappropriate by Clear Channel Communications.

The single's release followed a highly successful yet dark, brooding tone in "Youth of the Nation". Guitarist Marcos Curiel stated, "We wanted to go back to the spirit we had with 'Alive' and have a song that encourages people to be happy and thankful that they're alive... We wanted to say, 'Let's not forget how to have fun this time.' 'Boom' is just raw, in your face. When we play it live, the crowd just goes nuts. Fists are in the air and the pit's going."

"Boom" has often served as the opening song at P.O.D.'s concerts. The song's lyrics revolve around the band and their San Diego background, describing the group's rise to popularity with lines like "rock the masses, from Madrid to Calabasas." However, the explosive, multitracked "Boom!" of the chorus gives the song its impact and versatility as a soundtrack piece. In contrast to P.O.D.'s more faith-oriented tracks, "Boom" has been described by vocalist Sonny Sandoval as "just a fun rock song."

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