MLV is a multiplatform (Windows, Linux, Mac OS) file format associated with LabVIEW Mathscript application. MLV files are used for storing mathematical scripts used by the application. MLV files are only compatible with LabVIEW Mathscript, developed by National Instruments Corporation.

LabVIEW is an advanced programming platform used chiefly by engineers to solve various kinds of mathematical problems or design measurement systems. LabVIEW has been on the market for more than 20 years.