Auxiliary may refer to:
In language
- Auxiliary language (disambiguation)
- Auxiliary verb
In military and law enforcement
- Auxiliary police
- Auxiliaries, civilians or quasi-military personnel who provide support of some kind to a military service
- Auxiliaries (Roman military)
In religion
- Auxiliary bishop, in the Roman Catholic Church
- Auxiliary organization (LDS Church)
In technology
- Auxiliary input jack and auxiliary cable, generally for audio
- frequently associated with mobile device audio
- Aux-send of a mixing console
- An auxiliary port is a common port found on many Cisco routers for CLI access.
- A backup site or system
Other uses
- Auxiliary route, also known as "special route", in road transportation
- An auxiliary route of the Interstate Highway System in the United States
- Auxiliary ship is a naval vessel designed to operate in support of combat ships and other naval operations
- Auxiliary (fraternity or sorority)
- A marching band color guard
- Auxiliary percussion
- "Auxiliary", a song by Benjamin Clementine from And I Have Been, 2022
See also
- Aux (disambiguation)
- Axillary (disambiguation)