A boy band, written in some countries boys band or boy's band, is a type of pop group featuring several young male singers. The members are generally expected to perform as dancers as well, often executing highly choreographed sequences to their own music. Although there are no distinct traits defining a boy band, one could label a band a "boy band" for following mainstream music trends, changing their appearances to adapt to new fashion trends, having elaborate dance moves, and performing elaborate shows. They can evolve out of church choral or Gospel music groups, but are often put together by talent managers or record producers who audition the groups for appearance, dancing, rapping skills, and singing ability. Boy bands often seem to be prefabricated.

Some do not play musical instruments, and the acts are essentially vocal harmony groups (though there are some exceptions, such as groups like A1, The Moffatts, South 65, Marshall Dyllon, Busted or McFly). Due to this and their general commercial orientation towards a teenybopper, teens, or preteen audience, the term has negative connotations in music journalism. Boy bands are similar in concept to girl groups.