IAG is one of the eight semi-autonomous Associations comprising IUGG.
IERS functions as one of the IAG Scientific Services.

Web site: https://geodesy.science/iag/

IAG / IUGG Representative to the IERS Directing Board:
Thomas Herring

IERS Representative to IAG Commission 1 (Reference Frames) Steering Committee:
Detlef Angermann

IERS Representative to IAG Commission 3 (Earth Rotation and Geodynamics) Steering Committee:
Robert Heinkelmann

IERS Representatives to Inter-Commission Committee on Marine Geodesy (ICCM) Steering Committee:
Henryk Dobslaw
Rüdiger Haas

Ex officio IERS Associate Members:
IAG Secretary General: Daniela Thaller
President of IAG Commission 1 (Reference Frames): Urs Hugentobler
Chair of IAG Subcommission 1.1 (Coordination of Space Techniques): Krzysztof Sośnica
Chair of IAG Subcommission 1.2 (Global Reference Frames): Mathis Bloßfeld
Chair of IAG Subcommission 1.4 (Interaction of Celestial and Terrestrial Reference Frames): Maria Karbon
President of IAG Commission 3 (Earth Rotation and Geodynamics): Rebekka Steffen
Chair of IAG Subcommission 3.1 (Earth Tides and Geodynamics): Séverine Rosat
Chair of IAG Subcommission 3.3 (Earth Rotation and Geophysical Fluids): Sigrid Böhm