Microsoft Flight Simulator is a series of flight simulator programs for MS-DOS, Classic Mac OS and Microsoft Windows operating systems. It was an early product in the Microsoft application portfolio and differed significantly from Microsoft's other software, which was largely business-oriented. As of November 2022, Microsoft Flight Simulator is the longest-running software product line for Microsoft, predating Windows by three years. Microsoft Flight Simulator is one of the longest-running PC video game series of all time.

Microsoft Flight is an amateur flight simulation from Microsoft Studios created as a spin-off of the Microsoft Flight Simulator series. The game is offered "free-to-play"; charging players for downloading extra content, aircraft or scenery.