Musical Instrument Digital Interface, an industry-standard electronic communications protocol that enables electronic musical instruments, computers and other equipment to communicate, control and synchronize with each other in real time
MIDI file formats, MIDI messages (along with timing information) collected and stored in a computer file system
Dents du Midi, a mountain range in the Canton of Valais, Switzerland
Le Midi, a colloquial name for Southern France, a loosely defined geographical area consisting of the regions that border Spain, the Mediterranean Sea and Italy
Canal du Midi (or Canal des Deux Mers), a 240 km long canal in the south (le Midi) of France
Midi-Pyrénées, the largest region of metropolitan France