TDH

TDH can refer to:
 * Terre des hommes, Swiss children's rights charity organisation
 * Total dynamic head
 * L-threonine dehydrogenase
 * Turkey's Change Movement (Türkiye Değişim Hareketi), a Turkish political party
 * (+)-Thujan-3-ol dehydrogenase, an enzyme
 * TDH (news agency), Turkmenistan
 * TommyLee Dauphinais Howard, rapper