DIH or dih may refer to:
- Defense Intelligence Headquarters, the official signals intelligence agency of the Japanese government
- Diamond Hill station (station code DIH), a Hong Kong MTR railway station
- Dih, Raebareli, a village in Uttar Pradesh, India
- Dih, Turkey, the Kurdish name for the city of Eruh
- Dihedral group (dih)
- Kumeyaay language (ISO 639 code: dih)
- Digital intangible heritage
- Heimwehfluhbahn (German: Drahtseilbahn Interlaken–Heimwehfluh), a funicular railway in Switzerland