a prototype race car developed by Mercedes-Benz in collaboration with in-house tuning division AMG and motorsports specialists HWA GmbH. Designed to meet Le Mans Grand Touring Prototype regulations, the CLRs were intended to compete in sports car events during 1999, most notably at the 24 Hours of Le Mans which Mercedes had last won in .

In software engineering, a plain old CLR object, or plain old class object is a simple object created in the .NET Common Language Runtime that is unencumbered by inheritance or attributes.

SQL CLR or SQLCLR (SQL Common Language Runtime) is technology for hosting of the Microsoft .NET common language runtime engine within SQL Server.