IACS is organized in 5 Divisions:
|Division I||Snow and Avalanches|
|Division II||Glaciers and Ice-sheets|
|Division III||Sea Ice, Lake and River Ice|
|Division IV||Cryosphere, Atmosphere and Climate|
|Division V||Planetary and other Ices of the Solar System|
The role of Divisions is to further the scientific objectives of IACS. Each Division is represented on the IACS Bureau by a Division Head. IACS Working Groups are overseen by an appropriate Division.