Sniffer

Sniffer may refer to:


 * Packet analyzer (aka network analyzer, protocol analyzer or sniffer), computer software or hardware that can intercept and log traffic passing over a digital network
 * The trademark for the original Network General Sniffer protocol analyzer
 * Autolycus (submarine detector) (aka sniffer), a device to detect diesel exhaust fumes from a submarine
 * Allan Clarke (footballer), the Leeds Utd, Fulham and England striker known by that nickname
 * A slang term for intoxicative inhalants
 * Sniffer (Anwar Ka Ajab Kissa), a 2013 Indian film directed by Buddhadev Dasgupta
 * Sniffer, a type of creature found within the video game Minecraft