The International Bureau of Weights and Measures (French: Bureau international des poids et mesures), is an international standards organisation, one of three such organisations established to maintain the International System of Units (SI) under the terms of the Metre Convention (Convention du Mètre). The organisation is usually referred to by its French initialism, BIPM.

The other organisations that maintain the SI system, also known by their French initialisms are the General Conference on Weights and Measures (French: Conférence générale des poids et mesures) (CGPM) and the International Committee for Weights and Measures (French: Comité international des poids et mesures) (CIPM).

The BIPM was created on 20 May 1875, following the signing of the Metre Convention, a treaty among 51 nations (as of August 2008^[update]). It is based at the Pavillon de Breteuil in Sèvres, France, granted to the Bureau in 1876, where it enjoys extraterritorial status.

Under the authority of the Metric Convention, the BIPM helps to ensure uniformity of SI weights and measures around the world. It does so through a series of consultative committees, whose members are the national metrology laboratories of the Convention's member states, and through its own laboratory work.

A unit of measurement is a definite magnitude of a physical quantity, defined and adopted by convention and/or by law, that is used as a standard for measurement of the same physical quantity. Any other value of the physical quantity can be expressed as a simple multiple of the unit of measurement.

For example, length is a physical quantity. The metre is a unit of length that represents a definite predetermined length. When we say 10 metres (or 10 m), we actually mean 10 times the definite predetermined length called "metre".

The definition, agreement, and practical use of units of measurement have played a crucial role in human endeavour from early ages up to this day. Different systems of units used to be very common. Now there is a global standard, the International System of Units (SI), the modern form of the metric system.

In trade, weights and measures is often a subject of governmental regulation, to ensure fairness and transparency. The Bureau international des poids et mesures (BIPM) is tasked with ensuring worldwide uniformity of measurements and their traceability to the International System of Units (SI). Metrology is the science for developing nationally and internationally accepted units of weights and measures.

The World Organization of the Scout Movement (WOSM) is the non-governmental international organization which governs most national Scout Organizations, with 31 million members. WOSM was established in 1920, and has its headquarters at Geneva, Switzerland. It is the counterpart of the World Association of Girl Guides and Girl Scouts (WAGGGS).

The mission of WOSM is to contribute to the education of young people, through a value system based on the Scout Promise and Scout Law, to help build a better world where people are self-fulfilled as individuals and play a constructive role in society. WOSM is organized into regions and operates with a conference, committee and bureau.

The World Scout Conference (WSC) is the governing body and meets every three years, preceded by the World Scout Youth Forum. The World Scout Conference is the general assembly of Scouting and is composed of six delegates from each of the member Scout associations. If a country has more than one association, the associations form a federation for coordination and world representation. The basis for recognition and membership in the World Scout Conference includes adherence to the aims and principles of the World Organization of the Scout Movement, and independence from political involvement on the part of each member association.