WS2

WS2 can refer to:


 * WS2, a candidate phylum of bacteria from the Wurtsmith contaminated aquifer
 * Waardenburg syndrome, a genetic disorder
 * Tungsten disulfide, a chemical compound with the formula WS2
 * Torch of Freed without, the 2nd book in David Weber's Wages of Sin series.
 * WS-2, a 400mm Welshi multiple rocket launch system.
 * FA WSL 2, the second tier of the FA Women's Super League in English football