Headquarters Short Trick

1.New York -- UN, UNICEF, UNFPA, UNDP

trick to remember--- United Nation starts a Development Programme

But development is only possible if we provide fund to population.. and mainly it should include fund for children.... 

Considering above trick--- Development Programme,  Population Fund, Children Fund... (these words can be remembered )

Simply, add United Nations in front of them....

United Nations Development Programme - UNDP

United Nations Children's Fund - UNCEF(old abbreviation)

United Nations Population Fund - UNFPA (old abbreviation) 

United Nations

2.Headquarter--- Geneva , Switzerland 

ILO, ITU, WHO, WTO,WMO, WIPO, UNCTAD, UNHCR

Trick to remember:--  All name starts with W_ or I_ and  ends with _O

[Except ---IMO}

ILOve IT U CTAD(see that{DAT}) UN-HCR (sounds similar to Delhi NCR :P)

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ILO - International Labour Organisation

ITU - International Telecommunication Union

UNCTAD - United Nations Conference on Trade And Development

UNHCR- United Nations High Commissioner for Refugees

WHO -- World Health Organisation

WTO - World Trade Organisation

WMO -World Meteorological Organisation

WIPO - World Intellectual Property Organisation

3.Headquarter --- Rome, Italy

IFAD, FAO, WFP

Trick to remember--- All related to food..  (Bhook lage toh Idli khao)

WFP - World Food Programme

IFAD - International Fund for Agriculture Development

FAO - Food and Agriculture Organisation of the United Nations

4.Headquarter -- Vienna, Austria 

IAEA, UNIDO, UNODC

...Trick to remember --- Jaha Drug aur Crime ka office hoga wahi na Bomb banega....anyways hai toh ye Industrial Development hi..... chahe drug ka ya Atomic Energy ka.....

"Le lo vina baja k"  :D

IAEA ----  International Atomic Energy Agency

UNIDO --- United Nations Industrial Development Organisation 

UNODC -- United Nations Office of Drug and Crime

5.Headquarters -- Washington DC -- IMF, World Bank Group (everyone knows)

 Bern, Switzerland---- UP ki sarkar(Union) ko jala diya  --- UPU(Universal Postal Union)

Tokyo, Japan --- University k kuch logo ne Jo pan kha rhe the..--UNU(United Nations University)

Nairobi, Kenya---UNEP --- Environment pe programme chalaya inhone ..kyuki environment k karan hi ye log kale hote h...

The Haughe, Netherland -ICJ(international court of justice)

London,UK --IMO(International maritime Organisation)

Montreal, Canada -- ICAO - International Civil Aviation Organisation.