 The International Soil Moisture Network, ISMN, is a global network of soil moisture measurement sites that provides access to data from over 500 stations around the world. The network is designed to facilitate the exchange of data between participating networks and to make this data accessible to researchers and other interested parties. The ISMN currently includes data from 19 networks and covers a wide range of geographic locations, including North America, Europe, Asia, and Australia. The data is available in a variety of formats, including raw data, processed data, and metadata. The data is also available via a web-based interface, allowing users to search and select data sets based on location, date, and other criteria. The ISMN is an important resource for researchers who need accurate and reliable data about soil moisture levels around the globe. This article was authored by W. A. Derigo, W. Wagner, R. Hohensen, and others.