BTX

BTX may refer to:
 * Bildschirmtext, an interactive videotex system launched in 1983 in West Germany
 * BTX (chemistry), a mixture of benzene, toluene and xylenes
 * B't X, a science fiction manga and anime television series created by Masami Kurumada
 * BTX (form factor), a form factor for PC motherboards
 * Backstreets Magazine, also known as BTX, a popular Internet forum for fans of musician Bruce Springsteen
 * Batrachotoxin, a neurotoxic poison that blocks sodium channels
 * Botulinum toxin, the most potent neurotoxin known