The BMW 02 Series is a range of sporty compact executive cars produced by German automaker BMW between 1966 and 1977, based on a shortened version of the New Class Sedans.

The first 02 Series produced was the 1600-2 (later renamed 1602) in 1966. In 1975, the 02 Series was replaced by the E21 3 Series (except for the 1502 model which continued until 1977).

In the mid-1960s BMW perceived a market for a smaller, more affordable, two-door version of its four-door New Class executive sedan. Corporate design director Wilhelm Hofmeister assigned the project to staffers Georg Bertram and Manfred Rennen, who produced an attractive and sporty car 5 cm (2 in) shorter in wheelbase and some 25 cm (10 in) shorter in length, mainly by bobbing the rear deck. The resulting 1966 production 1600-2 was less well-appointed than the New Class, but lighter, faster, and better handling.

The larger displacement 2002 directly derived from it in 1968 would go on to establish a new reputation for BMW as a maker of high-quality affordable performance vehicles.

Cabriolet, targa, hatchback, and economy versions of various "02" Series models were also produced.

Helmut Werner Bönsch, BMW's director of product planning, and Alex von Falkenhausen, designer of the company’s M10 engine, each had a two-litre version of it installed in a 1600-2 for their personal use. When they realised they had both made the same modification to their own cars, they prepared a joint proposal to BMW's board to manufacture a two-litre version of the 1600-2. At the same time, American importer Max Hoffman was asking BMW for a more sporting version of the 02 series that could be sold in the United States.

As per the larger coupe and 4-door sedan models, the 2.0 engine was initially sold in two states of tune: the base carburettor 2002 producing 100 PS (74 kW; 99 hp) and the carburettor high compression 2002 ti producing 120 PS (88 kW; 118 hp). The 2002 Automatic, with the base engine and a ZF 3HP12 3 speed automatic transmission, became available in 1969. The 2002 ti was replaced in 1971 by the 2002 tii, which used the fuel-injected 130 PS (96 kW; 128 hp) engine from the 2000 tii, delivering a top speed of 185 km/h (115 mph).