DAH is an abbreviation for:
- Dahomey, historic Olympic country code for today's Benin
- German AIDS -Hilfe eV, founded in 1983 in Berlin
- German lawyer hotline (actually abbreviated D -AH), since 1998 a new form of legal advice
- German Emigration Center, Museum in Bremerhaven with the central theme of emigration German in the U.S.
DAH as distinguishing signs on license plate:
- Germany: Landkreis Dachau