JS3

JS-3, JS3, or variation, may refer to:


 * JS-3 heavy tank, the "Josef Stalin 3" Soviet WWII tank
 * Ligier JS3, French sportscar racecar built by Ligier from 1971
 * ECMAscript 3.0 (JS3.0), JavaScript standard, see JavaScript
 * JScript 3.0 (MS JS 3.0), Microsft Javascript variant, see JScript
 * Jonker JS-3 Rapture, a glider
 * Tengah MRT station, Singapore, station code JS3