The AIM-174B is a long-range air-to-air missile (AAM) developed by U.S. defense contractor Raytheon and used by the United States Navy (USN).

[17] As the AIM-260 is similarly a very long-range air-to-air missile, it is unclear what the relationship between the AIM-174B and AIM-260 will be, as the USN has co-operated with the United States Air Force (USAF) in developing the latter for use by both services.

[20] In September 2024, photos emerged of a USN Super Hornet of the VX-9 'Vampires' carrying four AIM-174Bs, three AIM-120 AMRAAMs, two AIM-9Xs, and an ATFLIR targeting pod simultaneously.

[citation needed] Between the AIM-174's advantages over a surface-launched SM-6 and the possibility of lofted-launch profiles, the AIM-174's range may extend to hundreds of nautical miles.

[29] The USN also routinely understates the publicly-available ranges and capabilities of weapon systems for strategic security purposes.