Indian Institute of Geomagnetism (IIG) is one of the premier research institutions in the country equipped to undertake highly advanced and front-line interdisciplinary research in the areas of Geomagnetism, Solar-Terrestrial Interaction, Space Plasmas, Atmosphere-Ionosphere and Lithosphere-Atmosphere-Ionosphere Coupling, Polar Sciences, Structure and Geodynamics of Earth's Interior, Paleoclimate, Natural Hazards and Resources, and Archeological exploration.

The legacy of IIG dates back to 1841 with the first magnetic observations recorded at Colaba meteorological observatory. Since then, the continuous magnetic field recordings from the Colaba-Alibag twin observatories form the world’s most historic and longest continuous magnetic field observations for 180 years.

On 1st April 1971, the observation and data collection entity of Colaba-Alibag magnetic observatories was transformed into a full-fledged autonomous research institution, namely, Indian Institute of Geomagnetism, initially under Ministry of Tourism and Civil Aviation, Government of India, with a mandate to promote, guide, and conduct research in all branches of Geomagnetism.  IIG is currently functioning under Department of Science and Technology, Government of India.

The year 2021 - 2022 is a momentous year for IIG which is celebrating its Golden Jubilee coinciding with the Semisesquicentennial of Indian Independence (Azadi Ka Amrit Mahotsav). During this ceremonial year, IIG is proud to host the 15th Quadrennial Solar-Terrestrial Physics (STP-15) Symposium in India.