The acronym CPDL may refer to:
*
Canadian Patents and Development Limited
Canadian Patents and Development Limited (CPDL) was a Canadian agency tasked with promoting the commercialization of inventions and discoveries arising from government departments and agencies, as well as those disclosed to it by universities and ...
, a Canadian agency from 1947 to 1993
*
Choral Public Domain Library
The Choral Public Domain Library (CPDL) is a sheet music archive which focuses on choral and vocal music in the public domain or otherwise freely available for printing and performing (such as via permission from the copyright holder).
It is a ...
, a sheet music semi-commercial archive which focuses on choral and vocal music
*
Controller Pilot Data Link (also known as Controller Pilot Data Link Communications), a method of communication between an aircraft pilot and Air Traffic Control
{{disambig