BMW M3, BMW'nin şirket içi motor sporları bölümü BMW M GmbH tarafından geliştirilen BMW 3 Serisinin yüksek performanslı bir versiyonudur. M3 modelleri, E30 M3'ün 1986'da tanıtılmasından bu yana her 3 Serisi nesli için üretilmiştir.

The initial model was available in a coupé body style, with a convertible body style added soon after. M3 saloons were available during the E36 (1994–1999) and E90 (2008–2012) generations. Since 2014, the coupé and convertible models have been rebranded as the 4 Series range, making the high-performance variant the M4, so that generation of 3 Series saw the M3 produced only as a saloon. In 2020, the M3 was produced as an estate (Touring) for the first time, alongside the saloon.