Active may refer to: Music Active (album), a 1992 album by Casiopea 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 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 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)