Here, you will find all international organisations with their Headquarters and their formation dates. When Pakistan joined international organisations are also given in proper order.

List of International Organisations and their Headquarters:

UNO : New York
UNICEF: New York
NAM : New York
UNFPA: New York
FAO : Rome
Red Cross : Geneva
ILO : Geneva
WHO : Geneva
UNHCR : Geneva
WTO : Geneva
WMO : Geneva (World meteorological organisation )
World Economic Forum : Geneva
UNCTAD : Geneva
UNESCO : Paris
UNIDO : Vienna
OPEC : Vienna
IAEA : Vienna
EU : Brussels
APEC: Singapore
ASEAN : Jakarta
OIC : Jeddah
SAARC : Kathmandu
SCO : Beijing
BRICS : Shanghai
ADB : Manila
Twitter: San Francisco
Facebook : California
Google: California
IMF : Washington D.C
World Bank : Washington D.C
ECO: Tehran
SEATO : Bangkok
CENTO :Ankara
FIFA : Zurich, Switzerland
NATO : Brussels, Belgium
Commonwealth of Nations: London
International Maritime Organisation: London
Amnesty International :London,
INTERPOL: Lyon, France
UNO AGENCIES :
ILO : Geneva
WMO : Geneva
WIPO: Geneva
UNHCR :Geneva
ITU : Geneva
IAEA : Vienna
FAO : Rome
IFAD: Rome
UNESCO : Paris
IBRD (World Bank): Washington DC
IDA : Washington DC
IFC: Washington DC
IMF : Washington DC
IMO : London
UNICEF : New York
UNDP: New York
UNFPA : New York
UPU: Bern
ESCAP: Bangkok

List of International Organisations and their foundation dates:

WORLD ORGANISATIONS THEIR FOUNDATION YEARS

Red Cross :1863
FIFA : 1904
ILO : 1919
WORLD BANK : 1944 officially
IMF:1944 officially
UNO -24 October, 1945
FAO : 1945
Arab League :1945
UNESCO :1945 officially
WHO : 1948 officially
NATO :1949
SEATO:
Created in 1954, but dissolved in 1977
CENTO :
Created in 1955, but dissolved in 1979
IAEA :1957
OPEC : 1960
ADB : 1966
ASEAN :1967
OIC :1969
SAARC :1985
ECO: 1985
EU: 1993
SCO: 1996, set up again in 2001
BRICS :2006

WHEN PAKISTAN JOINED VARIOUS ORGANISATIONS

Here, you will find that when Pakistan joined these international organisations

Pakistan joined UNO on 30 September, 1947.
Pakistan joined ILO in 1947.
Pakistan joined FAO in 1947.
Pakistan joined UNESCO in 1949.
Pakistan joined World Bank in 1950.
Pakistan joined IMF in 1950.
Pakistan joined SEATO in 1954
Pakistan left SEATO in 1973.
Pakistan joined CENTO in 1955.
Pakistan left CENTO in 1979.
Pakistan joined OIC in 1969.
Pakistan joined NAM in 1979.
Pakistan joined SAARC in 1985
Pakistan joined WTO in 1995.
Pakistan joined SCO in 2017.

In order to learn World Organisation and their Headquarters with foundations dates. Please do write all of them at least once in your notebook.