1, The full form of PSO is Public Service Obligation. It’s used on Governmental ,Policies & Programs in Worldwide

Public Service Obligation (PSO) is an arrangement in which a governing body or other authority offers an auction for subsidies, permit the winning company a monopoly to operate a specified service of public transport for a specified period of time for the given subsidy.

2, The full form of PSO is Pakistan State Oil. It’s used on Governmental ,Firms & Organizations in Pakistan

Pakistan State Oil (PSO) is the leading oil company in Pakistan run by Government of Pakistan.

3, The full form of PSO is Protocol Supporting Organization. It’s used on Associations & Organizations ,Technological Organizations in Worldwide

The Protocol Supporting Organization (PSO) is one of three Supporting Organizations called for in the ICANN bylaws. The PSO will advise the ICANN Board with respect to matters relating to the assignment of parameters for Internet protocols, technical standards that let computers exchange information and manage communications over the Internet.

4, The full form of PSO is Phantasy Star Online. It’s used on Computing ,Games & Entertainment in Worldwide

Phantasy Star Online (PSO) is an online multiplayer video Game.

5, The full form of PSO is Antonio Nariño Airport. It’s used on Transport & Travel ,Airport Codes in Colombia

Antonio Nariño Airport (IATA: PSO, ICAO: SKPS) serves the city of Pasto, capital of the Nariño Department in Colombia. The airport is named for Antonio Nariño(Antonio Nariño was an ideological Colombian precursor and one of the early political and military leaders of the independence movement in the New Granada,present day Colombia).