Dah

Dah or DAH may refer to:
 * Morse code symbol
 * Dah, Ivory Coast, a village in Montagnes District
 * Dah, Ladakh, a village in Jammu and Kashmir, India
 * Dah, Mali, a town in Ségou Region
 * Dah (band), former Yugoslav/Belgian band
 * Air Algérie (ICAO code: DAH), Algerian airline
 * Gwahatike language, a PNG Finisterre language, ISO 639 code dah
 * Dominica Award of Honour, an award of the Commonwealth of Dominica - postnominal letters are 'D.A.H.'