Computing
- Flag (computing), a true/false, on/off or open/closed indicator (Boolean variable)
- Command line flag, a modifier for a command line interface command
- FLAGS register (computing), a CPU register on x86 systems
- Fiber-Optic Link Around the Globe (FLAG), an undersea fiber optic cable
- Industry
- F.L.A.G. (Fabbrica Ligure Automobili Genova), an Italian automobile manufacturer c. 1906
- FLAGS (Far North Liquids and Associated Gas System), a natural gas pipeline in the North Sea
- Flag and pennant patterns, in technical analysis
- Mathematics
- Flag (geometry), part of a polygon, polyhedron or higher polytope
Discussion