Sin Cars is a Bulgarian supercar manufacturer based in Bulgaria and Germany.

Sin Cars was founded as Sin Cars Limited by the Bulgarian engineer and racing driver Rosen Daskalov in Great Britain in 2012. In 2015, the company started production of road-legal sportscar Sin R1. This vehicle features a 6.2-litre V8 engine, producing 444 bhp and can reach 62 mph in 3.5 seconds. The company moved its headquarters to Munich, Germany and finally to Ruse, Bulgaria.

In November 2018 it announced plans to finance expansion into the electric-cars market.