Active Radar

Active may refer to:

Music

* ''Active'' (album), a 1992 album by Casiopea
* "Active" (song), a 2024 song by Asake and Travis Scott from Asake's album ''Lungu Boy''
* Active Records, a record label

Ships

* ''Active'' (ship), several commercial ships by that name
* HMS ''Active'', the name of various ships of the British Royal Navy
* USCS ''Active'', a US Coast Survey ship in commission from 1852 to 1861
* USCGC ''Active'', the name of various ships of the US Coast Guard
* USRC ''Active'', the name of various ships of the US Revenue Cutter Service
* USS ''Active'', the name of various ships of the US Navy

Computers and electronics

* Active Enterprises, a defunct video game developer
* Sky Active, the brand name for interactive features on Sky Digital available in the UK and Ireland
* Active (software), software used for open publishing by Indymedia; see Independent Media Center
* The "live" circuit of mains power in countries observing AS/NZS 3112 electrical standard

Sciences

* Thermodynamic activity, measure of an effective concentration of a species in a mixture.
* Activation, in chemistry the process whereby something is prepared for a subsequent reaction
* Active (pharmacology), the fraction of a dose of unchanged drug that reaches systemic circulation
* Active voice, in linguistics, the grammatical voice prevalent in many of the world's languages.

Other

* Active, Alabama, a community in the US
* ''Active'', the original name of the early steam locomotive ''Locomotion'' No. 1
* "Actives", current members of fraternities and sororities
* Active living, a lifestyle characterized by frequent or various activities

See also

* Activity (disambiguation)
* Passive (disambiguation)
*

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