Encyclopedias, Almanacs, Transcripts, and Maps
- Williamson, George Hunt (1926-1986)
- Williamson, Marianne (1953-)
- Willington Mill
- Willis Haviland Carrier
- Willis, F. L. H
- Willow Tree
- Wilson Price Hunt
- Wilson, Cedric W(illiam) M(alcolm) (1925-)
- Wilson, Graham (1940-)
- Wilson, Percy (1893-?)
- Wilson, Robert R.
- Wilson, Robert W. (1936- )
- Winds (Paranormal)
- Wingfield, Kate (d. 1927)
- Winifred Edgerton Merrill
- Winogradsky Column
- Wirdig's Magnetic Sympathy
- Wireless Communications
- Wisconsin Phalanx
- Wissenschaftliche Gesellschaft zur Förderung der Parapsychologie