The B platform is an automobile platform for compact and subcompact cars of the Renault-Nissan Alliance since 2002.

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.