PDO

PDO is an abbreviation for:

Pacific Decadal Oscillation , a decadal fluctuation in water temperature in the north-eastern Pacific
Petroleum Development Oman , an Omani oil and gas exploration company
PHP Data Objects , abstraction level for database access
Protected Designation of Origin , see Origin
1,3-propanediol , chemical compound
a communication object, see CANopen
Project documentation

PdO stands for: