KDD may refer to:
- Khuzdar Airport, Balochistan, Pakistan
- Knowledge discovery in databases, a form of data mining
- KDD – Kriminaldauerdienst, a German television series broadcast from 2007 to 2010
- KDD Group, a Ukrainian real estate development company
- KDDI, a Japanese telecommunications company, formerly known as KDD
- Yankunytjatjara dialect
