International Statistical Institute

The International Statistical Institute (ISI) is a professional association of statisticians. It was founded in 1885, although there had been international statistical congresses since 1853. The institute has about 4,000 elected members from government, academia, and the private sector. The affiliated associations have membership open to any professional statistician.

The institute publishes a variety of books and journals, and holds an international conference every two years. The biennial convention was commonly known as the ISI Session; however, since 2011, it is now referred to as the ISI World Statistics Congress. The permanent office of the institute is located in the Statistics Netherlands (CBS) building in the Leidschenveen-Ypenburg district of The Hague, in the Netherlands. The ISI does not disclose its membership fees until an applicant has created an account.