An economic taxonomy is a system of classification of economic activity, including products, companies and industries. Some economists believe that the study of economic policy demands the use of a taxonomic/classificatory approach.
Industry taxonomies include international, regional and national taxonomies and proprietary taxonomies.
The international and national taxonomies are used by official statistical agencies.
United Nations provide its International Standard Industrial Classification (ISIC) as a base for establishing regional taxonomies:
The proprietary taxonomies are often used in the financial services industry to group similar investment vehicles and to construct sectorial .
Proprietary taxonomies include Industry Classification Benchmark and Global Industry Classification Standard.
Pavitt's Taxonomy classifies firms by their principal sources of innovation.
MasterFormat provides a taxonomy for organizing construction projects with the primary unit of differentiation consisting of a binary fail/no-fail tag. The majority of the users of MasterFormat fall into the first category.
Product classification or product taxonomy organizes products for a variety of purposes.
Other taxonomies include classifications of trademarks, jobs (occupations), patents, publications in the field of economy, standards, customs classification.