Jammer

Jammer may refer to:

Signal blocking devices

 * Radar jammer, a device used in radar jamming and deception
 * Radio jammer, a device used in radio jamming
 * Radio-controlled Improvised Explosive Device jammer, a counter-IED device
 * Mobile phone jammer, an instrument used to prevent cellular phones from receiving signals from base stations

Sports

 * Jammer (American football), a special teams position
 * Jammer (mascot), mascot of the Northern League Joliet Jackhammers
 * Jammer (swimwear), a type of male competitive swimwear
 * Jammer, the scoring position in roller derby
 * Jamestown Jammers, a minor league baseball team

People

 * Jammer (rapper) (born 1982), English rapper and producer
 * Daniel Jammer (born 1966), Jewish German-Israeli businessman and entrepreneur
 * Max Jammer (1915–2010), Israeli physicist and Rector and Acting President of Bar-Ilan University
 * Quentin Jammer (born 1979), American retired National Football League player

Entertainment

 * The Jammers, American electronic music studio group
 * Players of National Geographic Animal Jam
 * Jammers, a group of characters in the TV series The Prisoner who use misdirection to confuse onlookers with misinformation