United Nations Statistics Division

United Nations Statistics Division
Statistics and Statistical Methods Publications

International Standard Industrial Classification of All Economic Activities (ISIC), Revision 3.1
Series: M, No.04/Rev.3.1 
Sales number:
Languages available:E, A, C, R, F
Revision: Rev.3.1


The International Standard Industrial Classification of all Economic Activities (ISIC) is the international reference classification of productive economic activities. It provides a set of activity categories for the production of statistics according to such activities. Since the adoption of the original version of ISIC in 1948, the majority of countries around the world have used ISIC or developed national classifications derived from ISIC. ISIC has therefore become an important tool for comparing statistical data on economic activities at the international level. In this update to ISIC, Rev.3, the structure of the classification and the boundaries of its building blocks remain largely unchanged. Explanatory notes are provided in extended detail, allowing for more accurate interpretation of the content and boundaries of individual classes. New activities that have emerged over the previous 10 years are reflected in the new explanatory notes, allowing for easier, more consistent and thus less ambiguous application of ISIC.

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