SAARC
The South Asian Association for Regional Cooperation (SAARC) was established when its Charter was formally adopted on December 8, 1985 by the Heads of State or Government of Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan and Sri Lanka.SAARC provides a platform for the peoples of South Asia to work together in a spirit of friendship, trust and understanding. It aims to accelerate the process of economic and social development in Member States.

ECO
Economic Cooperation Organization (ECO), is an intergovernmental regional organization established in 1985 by Iran, Pakistan and Turkey for the purpose of promoting economic, technical and cultural cooperation among the Member States.ECO is the successor organization of Regional Cooperation for Development (RCD) which remained in existence since 1964 up to 1979.
In 1992, the Organization was expanded to include seven new members, namely: Islamic Republic of Afghanistan, Republic of Azerbaijan, Republic of Kazakhstan, Kyrgyz Republic, Republic of Tajikistan, Turkmenistan and Republic of Uzbekistan. The date of the Organization’s expansion to its present strength, 28th November, is being observed as the ECO Day.

OPEC:
The Organization of the Petroleum Exporting Countries (OPEC) is a permanent, intergovernmental Organization, created at the Baghdad Conference on September 10–14, 1960, by Iran, Iraq, Kuwait, Saudi Arabia and Venezuela. The five Founding Members were later joined by nine other Members: OPEC had its headquarters in Geneva, Switzerland, in the first five years of its existence. This was moved to Vienna, Austria, on September 1, 1965.
OPEC's objective is to co-ordinate and unify petroleum policies among Member Countries, in order to secure fair and stable prices for petroleum producers; an efficient, economic and regular supply of petroleum to consuming nations; and a fair return on capital to those investing in the industry.

OIC:
The Organization of the Islamic Conference (OIC) is the second largest inter-governmental organization after the United Nations which has membership of 57 states spread over four continents. The Organization is the collective voice of the Muslim world and ensuring to safeguard and protect the interests of the Muslim world in the spirit of promoting international peace and harmony among various people of the world. The Organization was established upon a decision of the historical summit which took place in Rabat, Kingdom of Morocco on 12th Rajab 1389 Hijra (25 September 1969) as a result of criminal arson of Al-Aqsa Mosque in occupied Jerusalem.
Major Tasks:
# Enhance and consolidate the bonds of fraternity and solidarity among the Member States;# Safeguard and protect the common interests and support the legitimate causes of the Member States and coordinate and unify the efforts of the Member States in view of the challenges faced by the Islamic world in particular and the international community in general;
# Respect the right of self-determination and non-interference in the domestic affairs and to respect sovereignty, independence and territorial integrity of each Member State;