A naval aviator is a commissioned officer or warrant officer qualified as a crewed aircraft pilot in the United States Navy or United States Marine Corps. United States Coast Guard crewed aircraft pilots are officially designated as "Coast Guard aviators", although they complete the same undergraduate flight training as Navy and Marine Corps crewed aircraft pilots, and are awarded the same aviation breast insignia.

In the U.S. Navy, most naval aviators are unrestricted line officers (URLs), eligible for command at sea, but a small number of former senior enlisted personnel subsequently commissioned as line limited duty officers and chief warrant officers in the aviation operations technician specialty have also been trained as naval aviators and naval flight officers.

A small number of URL officers trained as naval aviators and naval flight officers who hold technical degrees at the undergraduate and/or postgraduate level may also opt to laterally transfer to the restricted-line (RL) as aerospace engineering duty officers (AEDOs). AEDOs are frequently test pilot school graduates and retain their flying status, with most of their billets being in the Naval Air Systems Command (NAVAIRSYSCOM).

An even smaller number of naval aviators are in the U.S. Navy Medical Corps, primarily as naval flight surgeons. These are either former URL officers previously designated as naval aviators who later attended medical school and transferred to the medical corps, or an even smaller percentage of "dual designator" naval flight surgeons who are selected to be student naval aviators (SNAs) and underwent pilot training as medical corps officers. The vast majority of naval flight surgeons, although they are on flight status, are not dual designated and are not naval aviators.

All U.S. Marine Corps officers are line officers, either unrestricted line, limited duty, or warrant officers, eligible to command MAGTF units commensurate with their grade, designation, and occupational specialty; the U.S. Marine Corps does not have restricted line officers or staff corps officers, as does the U.S. Navy. All current USMC naval aviators and naval flight officers are unrestricted line officers, analogous to the Navy's URLs.

The U.S. Coast Guard categorizes all of its officers generally, with its Coast Guard aviators also being considered "operational" officers in the same manner as its cutterman officers in the Coast Guard's surface cutter fleet.

Until 1981, the U.S. Navy and U.S. Marine Corps also had a small number of senior enlisted personnel trained as pilots. The last U.S. Coast Guard aviation pilot retired in 1979. Such individuals were referred to as "naval aviation pilots", colloquially "NAPs" or "APs". The since retired NAPs also continue to have a professional organization known as the "Silver Eagles", which remains informally aligned with other naval aviation professional organizations such as the Association of Naval Aviation, the Tailhook Association, the Maritime Patrol Association, and the Naval Helicopter Association (the pilot wings worn by NAPs were identical in design to the naval aviator insignia worn by commissioned officers. The silver eagle title was a reflection that the rating badge on their uniform had a silver eagle).

The U.S. Navy still has an unknown number of senior officers on active duty in the regular navy or serving in the navy reserve who were originally accessed as naval aviation cadets (NAVCADs). These individuals entered service via the NAVCAD program during the mid-to-late 1980s and early 1990s when the program was reinstated following a hiatus of over 20 years. NAVCADs were non-commissioned cadets who were required to have a minimum of 60 college credit hours to enter flight training (rather than the bachelor's degree normally required for entry into the flight training program) and were accessed only through the now-defunct Aviation Officer Candidate School (AOCS) program. Upon completion of AOCS, NAVCADS would enter into flight training and upon successful completion of training and designation as a naval aviator would be commissioned as officers with a reserve commission in an active-duty status. After completion of their initial operational flying tours, they would receive an assignment to complete their bachelor's degree. NAVCADs who failed to successfully complete flight training were contractually obligated to enter fleet service as undesignated enlisted personnel.