W4
W4, W 4 or W.4 stands for:
- D4 , four-sided dice , see dice #The standard dice
- W4 , variant of Mark 4 (nuclear weapon) , American nuclear weapon
- Eutelsat W4 , former name of the Eutelsat 70C , television satellite
- Albatros W.4 , German military aircraft (1916-1919)
- Focke-Wulf W 4 , German military aircraft (1927–1932)
