PLD

PLD may stand for:

In technology:
* programmable logic device, a type of integrated circuit semiconductor
* Pulsed Laser Deposition, a method of growing thin films

In biology:
* Phospholipase D, an enzyme which cleaves phosphatidylcholine to produce phosphatidic acid and choline
* Polycystic Liver Disease, multiple cysts scattered throughout the normal liver tissue

In politics:
* "Partido de la Liberación Dominicana" or Dominican Liberation Party
* "Partidul Liberal Democrat" or Liberal Democratic Party (Romania)

In other contexts
* schools named Paul Laurence Dunbar High School