Commission 1 - Reference Frames

Commission 2 - Gravity Field

Commission 3 - Earth Rotation and Geodynamics

Sub-Commission 3.2 - Permament Study Group CEI

Commission 4 - Positioning and Applications

Inter-Commission Committee on Theory (ICCT)

Global Geodetic Observing System (GGOS)

Bureau Gravimetrique International (BGI)

Bureau International de Poids et Mesures (BIPM)

IAG Bibliography Service (IBS)

International Centre for Earth Tides (ICET)

International Center for Global Earth Models (ICGEM)

International Digital Earth Models Service (IDEMS)

International DORIS Service (IDS)

International Earth Rotation and Reference Systems Service (IERS)

International GNSS Service (IGS)

International Geoid Service (IGeS)

International Gravity Field Service (IGFS)

International Laser Ranging Service (ILRS)

International VLBI Service for Geodesy and Astrometry (IVS)

Permanent Service for Mean Sea Level (PSMSL)

Communication and Outreach Branch (COB)

Advisory Board of the Law of the Sea (ABLOS)