Diah may refer to:
People
editWith the given name
edit- Diah Hadaning (1940—2021), Indonesian writer
- Diah Permata Megawati Setiawati Sukarnoputri (born 1947), Indonesian politician, fifth president of Indonesia from 2001 to 2004
- Diah Permatasari (actress) (born 1971), Indonesian actress
- Diah Permatasari (fencer) (born 1990), Indonesian fencer
With the surname
edit- Abel Peter Diah (born 1971), Nigerian politician
- Herawati Diah (1917–2016), Indonesian journalist