The Subaru Justy is a city car and hatchback produced from 1984 to 2010. The Justy is also called the Trendy and the Tutto in some markets, and has been sold as a rebadged hatchback called Daihatsu Boon since 2010. The Justy has since been replaced by the Subaru Trezia.

The first generation Justy was originally sold with 2 body configurations and 2 engine variations. It only came with a manual transition and CVT. Several companies also sold the Justy nameplate, including Suzuki and Chevrolet. Worldwide sales opened in 1987 and a restyling was made in 1989.

The 1996 Justy was equipped with improved safety features plus new headlights, grille and bumpers. This version was also offered in 3- and 5-door versions as well as a four wheel drive layout. This second generation is also known as Suzuki Cultus in other markets.

In 2004, Subaru launched a small SUV version of the Justy, called the G3X Justy, which continues to be produced today. The G3X is a rebadged Chevrolet Cruze and was marketed primarily in Europe. The latest revival of the Justy was unveiled at the 2007 Frankfurt Motor Show using fresh the second generation Daihatsu Boon model. In 2008, the Boon line was extended to include a 7-seater version.