The Renault Clio is a supermini (B-segment) car, produced by French automobile manufacturer Renault. It was launched in 1990, and entered its fifth generation in 2019. The Clio has had substantial critical and commercial success, being consistently one of Europe's top-selling cars since its launch, and it is largely credited with restoring Renault's reputation and stature after a difficult second half of the 1980s. The Clio is one of only two cars, the other being the Volkswagen Golf, to have been voted European Car of the Year twice, in 1991 and 2006.

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.