4-way

4-way or Fourway can refer to:
 * an acoustic system containing four loudspeakers
 * a formation skydiving event, "4-way sequential", that has four members in each team
 * a Symmetric multiprocessing system with 4 processors
 * Fourway Athletics, a Hong Kong football team
 * Four-slide
 * Four-way switch
 * Fourway, Virginia (disambiguation)