Wack

Wack or Whack may refer to:

People

 * Gerhard Wack (born 1945), German politician
 * Henry Wack (1875-1955), attorney, author, and apologist for Leopold II's misrule of the Congo Free State
 * Pierre Wack (1922–1997), a French oil executive who was the first to develop the use of scenario planning in the private sector
 * Tierra Whack (born 1995), an American rapper, singer, and songwriter

Arts, entertainment, and media

 * WACK, a radio station in Newark, New York
 * WACK! Art and the Feminist Revolution, a feminist art exhibition and book
 * Whack, a short-lived St. John Publications comic book (1953-54)
 * Whack Records
 * WACK, a Japanese music production company
 * Wack, a radio personality on 102.5 WIOG in Saginaw, MI, 2005-2010

Other uses

 * Wack, adjective, slang (from "whacked") for oppressive, crazy, stupid, poor quality, unfashionable. As a verb, it means to kill.
 * Slash symbol "/", sometimes known as a whack
 * Windows App Certification Kit (WACK)