ICU

ICU most commonly refers to intensive care unit, a special department of a hospital

It may also refer to:

Organisations

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

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
Irish Chess Union
Independent Checking Unit(Housing Bureau), Under the Office of the Permanent Secretary for Housing

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

.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

ICÚ (restaurant), in Puerto Vallarta, Mexico
Infection Control Unit, monitors day-to-day situation and offers professional recommendations on patient care practice and related infection control guidelines