- Ernst Mach
- Mach Number , as a measure of speed
- Inertial Mass
- GNU Mach , the microkernel on which GNU Hurd is based
- Mach Kernel , an operating systems kernel technology used in Mac OS X
- Mach Band , an optical illusion
- Mach Five , the name of the car in the animated TV series '' Speed Racer ''
- '' Mach 3 '', a Video Game developed and published by Loriciels
- Gillette Mach3 , a manual razor with 3 blades
- Mach , a town in Balochistan, Pakistan
- Machynlleth , a town in North Powys , Wales
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