Encyclopedias, Almanacs, Transcripts, and Maps
- wild boar
- Wild River
- wildebeest
- Wilderness Act (1964)
- Wilderness Society
- Wilderness Study Area
- Wildlife Management
- Wildlife Rehabilitation
- Willibrord
- Wilson, Edward Osborne (1929 – ) American Zoologist and Behavioral and Evolutionary Biologist
- Wilson, Sir (James) Harold
- Wind Energy
- windpipe
- Windscale (Sellafield) Plutonium Reactor
- Windsor, Duke of
- Winter Olympic Games
- Winter Range
- Winter Solstice Songs
- Winter Storms
- Wisdom Literature