A carrier air wing (abbreviated CVW) is an operational naval aviation organization composed of several aircraft squadrons and detachments of various types of fixed-wing and rotary-wing aircraft. Organized, equipped and trained to conduct modern US Navy carrier air operations while embarked aboard aircraft carriers, the various squadrons in an air wing have different but complementary (and sometimes overlapping) missions, and provide most of the striking power and electronic warfare capabilities of a carrier battle group (CVBG). While the CVBG term is still used by other nations, the CVBG in US parlance is now known as a carrier strike group (CSG).

Until 1963, Carrier Air Wings were known as Carrier Air Groups (CVGs). Carrier Air Wings are what the United States Air Force would call "composite" wings, and should not be confused with U.S. Navy Type Wings (such as Strike Fighter Wing Atlantic), which are primarily administrative and training commands composed of squadrons of the same type of carrier-based aircraft when not deployed. The United States Marine Corps equivalent command-level organization to a CVW is the Marine Aircraft Group (MAG). However, MAGs are shore-based (with sea-based capability) and may contain any combination of aircraft squadrons and aviation support units. Carrier Air Wings integrate closely with their assigned aircraft carriers, forming a "carrier/air wing team" that trains and deploys together. There are currently nine U.S. Navy Carrier Air Wings; four of the wing commanders and their staffs are based at Naval Air Station Oceana, Virginia, four are based at Naval Air Station Lemoore, California, and one is aboard Marine Corps Air Station Iwakuni, Japan. The squadrons which make up each wing are based at various bases in the U.S. with their respective Type Wing Commanders with the exception of those squadrons assigned to the Japan based airwing which are based at Marine Corps Air Station Iwakuni (fixed wing squadrons) and Naval Air Facility Atsugi, Japan (helicopters).

In addition to the squadrons which happen to be based at NAS Oceana and NAS Lemoore with the wing staffs the CONUS-based air wings also have squadrons based at NAS Whidbey Island, Washington; NAS Point Mugu, NAS North Island, and MCAS Miramar in California; NAS Jacksonville, Florida; MCAS Beaufort, South Carolina; MCAS Cherry Point, North Carolina; and NS Norfolk/Chambers Field, Virginia. These air wings are occasionally reassigned to different aircraft carriers based on carrier maintenance schedules. A modern air wing consists of roughly 1,500 personnel and 74–78 aircraft.

Carrier Air Groups (as they were then called) first appeared on 1 July 1937. Prior to this, squadrons were not grouped together, were not permanently assigned to a specific aircraft carrier and were designated serially within each squadron type. On 1 July 1937 for the first time, specific squadrons were grouped together, permanently assigned to a specific aircraft carrier and redesignated with the hull number of that carrier. A year later, on 1 July 1938 authorization for Air Group Commander billets became effective. With that action, the squadrons on board acquired the unity of a formal command and the carrier air group as such first took form. 1 July 1938 is the date recognized by the Navy as the establishment date of it first Carrier Air Groups.

From July 1937 to mid-1942, Carrier Air Groups were permanently assigned to and identified by their parent aircraft carrier, and group squadrons were numbered according to the carrier's hull number. For example, the Enterprise Air Group, assigned to USS Enterprise (CV-6), were all numbered "6": Fighting Squadron (VF) 6, Bombing Squadron (VB) 6, etc. From 1942, numerical designation of carrier air groups began, the first being Carrier Air Group 9 (CVG-9), established on 1 March 1942. For a while, they were given unique numbers according to their assigned carriers' hull number (i.e., the Saratoga Air Group became CVG-3). This numbering scheme was also soon scrapped as carrier air groups (now abbreviated CVGs) frequently moved from carrier to carrier. At this point, the carrier air groups simply retained their number designation regardless of the carrier assigned.

The first formal system for air group identification (Visual Identification System for Naval Aircraft) was established in January 1945. This consisted of geometric symbols that identified the parent carrier, not the air group. As there were just too many carriers and the symbols were hard to remember or to describe over the radio, a single or double letter system was introduced in July 1945. The letters, however, still identified the carrier, not the carrier air group. The following identifications are known:

Shangri-La is known to have had her Lightning Bolt on the flight deck forward and aft replaced by her air group identification letter "Z", as the slight remaining Lightning Bolt can be seen painted on the deck beneath the Z on the victory photos of the carrier. Due to the ongoing combat and the end of the war, a mix of identification codes was used in late 1945. Starting in late 1946, the letters identified the carrier air group, and not the carrier. The use of single letters was discontinued in 1957.

On 15 November 1946, to correct the results of demobilization which had left squadron numbers all out of sequence, sweeping changes were made in air unit designations. Carrier Air Groups of four types were designated according to their assigned ship, as CVBG for Battle Carrier, CVG for Attack Carrier, CVLG for Light Carrier and CVEG for Escort Carrier. Two years later, on 1 September 1948, all carrier air groups became CVG regardless of their carrier affiliation.