The Field Offices deliver the frontline services of Philippine Ports Authority.

For ease in port administration and control, the country has been divided into five (5) geographical areas called port district, two in the Luzon island, one in the Visayas and two in Mindanao. The administrative unit overseeing the operations of each Port District is referred to as a Port District Office or PDO. Under the PDOs are smaller geographical groupings called Port Management Offices or PMOs. The PMOs, on the other hand, consist of frontline operating units called Terminals, the administrative units overseeing the operations of which are called Terminal Management Offices or TMOs. The TMOs, for their part, undertake directly the operation of each port facility. The field office of PPA consists of the 5 PDOs and 23 PMOs including their TMOs.

PPA Port System. The PPA Charter refers either directly or indirectly to a PPA Port System under which umbrella are ports in its supervision, control, regulation and covered by its development and operations program. The PPA Port System consists of all government commercial ports, not otherwise belonging to or under the jurisdiction of another government agency or entity. For purposes of rationalizing and optimizing the utilization of limited resources, PPA shall adopt a scheme of prioritization of development and maintenance of these ports.