DDH

DDH may refer to:


 * 1,3-Dibromo-5,5-dimethylhydantoin, a chemical also abbreviated as DBDMH
 * Ddh (trigraph), a trigraph used in the Dene Suline language for the dental affricate /tθ/
 * De Danske Husmoderforeninger, Danish women's organization
 * Decisional Diffie–Hellman assumption
 * Department of Digital Humanities, at King's College London (formerly Centre for Computing in the Humanities)
 * Developmental Dysplasia of the Hip, see Hip dysplasia (human)
 * Devonshire Dock Hall, the BAE Systems assembly facility
 * Disciples Divinity House, Christian seminary of the University of Chicago
 * DDH is hull classification symbol for helicopter carrier or helicopter destroyer