Police comissioner
On Fantage.com it means Prom Date. Depending on the context, it could mean Personnel Dept., past due, projected date, police department, public domain, etc.
Novelist P. D. James' two initials stand for Phyllis Dorothy.
P.D. usually stands for "Police Department", but in the legal context it stands for "Public Defender."
it is a term used in UPS huds descibing a specific area(ex. PD-10)