PDM

PDM may stand for:

Point Distribution Model, deformable contour model (used in Computer Vision)
Product Data Management
Pulse-density modulation, a form of modulation used in analog to digital conversions
Precedence Diagram Method, a project scheduling technique
Protocol-dependent module, decision making about routing table entries
Predictive maintenance, a method for planning maintenance based on condition
Psychodynamic diagnostic manual, a psychoanalytically-oriented manual for use by mental health professionals