Mobb Music is a style of West Coast rap music that began in the San Francisco Bay Area in the late 1980s. The basic instrumental style is derived primarily from funk music, with a heavy focus on synthesizers, ultra low bass lines and Roland TR-808 drums. The lyrics tend to deal with same subject matter as G-funk did in Southern California, such as gang-oriented inner-city lifestyles and struggles.

The sound of Mobb Music could be attributed to a host of producers such as Sean T, Cellski, Ant Banks, JT the Bigga Figga, and Khayree. Other Bay Area hip hop artists that contributed greatly to the development of the music include E-40, Too Short, Mac Dre, The Luniz and Spice 1, among many others.

While the classic Mobb albums still sell very well throughout Northern California, commercially it has been replaced in the region by a new form of Bay Area hip hop called Hyphy, which generally features faster tempos and more party-oriented themes while fitting in better with more recent commercial trends. Many of the big artists from the golden era of Mobb music are now adapting to the current format of Bay Area Hyphy music, particularly the most prominent pioneers of Mobb music, E-40 and Too Short.