ICU

ICU most commonly refers to: ICU may also refer to:
 * Intensive care unit, a special department of a hospital

Universities

 * Information and Communications University, South Korea
 * Istanbul Commerce University, Istanbul, Turkey
 * International Christian University, Mitaka, Tokyo, Japan
 * International Christian University – Kyiv, Ukraine
 * Imperial College Union, the students' union of Imperial College London

Politics

 * Industrial and Commercial Workers' Union, a South African political group from the 1920s
 * Industrial and Commercial Workers' Union (Ghana), a general union in Ghana
 * Internationalist Communist Union, an international grouping of Trotskyist political parties
 * Islamic Courts Union, a rival administration in Somalia

Other organisations

 * ICU Medical, an American company
 * International Cheer Union, the worldwide governing body of cheerleading
 * Investment Capital Ukraine, a Kyiv-based financial group
 * International Clearing Union, a 1944 currency exchange regulatory institution proposal

Arts and entertainment

 * I.C.U. (film), a 2009 Australian thriller
 * Inner City Unit, a British band
 * "ICU", a song by 69Boyz from the album The Wait Is Over, 1998
 * "I.C.U.", a song by Adore Delano from the album After Party, 2016
 * "ICU", a song by Phoebe Bridgers from the album Punisher, 2020
 * "ICU (Madison's Lullabye)", a song by Demi Lovato from the album Dancing with the Devil... the Art of Starting Over, 2021
 * "ICU" (song), a song by Coco Jones from the EP What I Didn't Tell You, 2022

Other acronyms

 * .icu, an Internet top-level domain
 * International Components for Unicode, software libraries supporting internationalization
 * Intersection capacity utilization, a measure of the capacity of a roadway intersection