The Suzuki Swift is a supermini car (B-segment) produced by Suzuki. The vehicle is classified as a B-segment marque in the European single market, a segment referred to as a supermini in the British Isles. Prior to this, the "Swift" nameplate had been applied to the rebadged Suzuki Cultus in numerous export markets since 1984 and for the Japanese-market Suzuki Ignis since 2000. The Swift became its own model in 2004. Currently, the Swift is positioned between Ignis and Baleno in Suzuki's global hatchback lineup.

The B-segment is the second smallest of the European segments for passenger cars, between the A-segment and C-segment, and commonly described as "small cars". The B-segment is the largest segment in Europe by volume, accounting for 20 percent of total car sales in 2020 according to JATO Dynamics.