The Opel Corsa is a supermini car engineered and produced by the German automobile manufacturer Opel since 1982. Throughout its existence, it has been sold under a variety of other brands owned by General Motors and also spawned various other derivatives.

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.