Boombox is a common term for a transistorized portable music player featuring one or two cassette tape recorder/players and AM/FM radio, generally with a carrying handle.

Beginning in the 1980s, a CD player was sometimes included. Sound is delivered through an amplifier and two or more integrated loudspeakers. A boombox is a device typically capable of receiving radio stations and playing recorded music (usually cassettes or CDs usually at a high volume). Many models are also capable of recording onto cassette tapes from radio and other sources. Designed for portability, boomboxes can be powered by batteries as well as by line current. The boombox was introduced to the American market during the mid-1970s. The desire for louder and heavier bass led to bigger and heavier boxes; by the 1980s, some boomboxes had reached the size of a suitcase. Most boomboxes were battery-operated, leading to extremely heavy, bulky boxes.

The boombox quickly became associated with urban society in the United States, particularly African American and Hispanic youth. The wide use of boomboxes in urban communities led to the boombox being coined a "ghetto blaster", a pejorative nickname which was soon used as part of a backlash against the boombox and hip hop culture. Cities petitioned for the banning of boomboxes from public places, and they became less acceptable on city streets as time progressed. The boombox became closely linked to American hip hop culture and was instrumental in the rise of hip hop music.

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