W
- St. Walburga
- St. Wenceslaus
- St. Wendelin of Trier
- St. Werburgh
- St. Wigbert
- St. Wilfrid
- St. Willehad
- St. William
- St. William (Bishop of St-Brieuc)
- St. William of Ebelholt
- St. William of Gellone
- St. William of Maleval
- St. William of Norwich
- St. William of Paris
- St. William of Perth
- St. Willibrord
- St. Willigis
- St. Winefride
- St. Winnoc
- St. Winwallus
- St. Wolfgang
- St. Wolstan
- St. Wulfram
- Waitzen
- Wakash Indians
- Walafrid
- Waldenses
- Wales
- Walkenried
- Walla-Walla Indians
- Walsingham Priory
- Walter Burleigh
- Walter Colman
- Walter Hilton
- Walter Map
- Walter Odington
- Walter of Chatillon
- Walter of Merton
- Walter of Mortagne
- Walter of St-Victor
- Walter of Winterburn
- Waltham Abbey
- Walther von Der Vogelweide
- Wandelbert
- War
- War of the Peasants
- Warsaw
- Washing of Feet and Hands
- Washington, D.C.
- Waterford and Lismore
- Way of the Cross
- Wearmouth Abbey
- Weingarten
- Weld Family
- Wellington
- Wells in Scripture
- Welsh Church
- Welsh Monastic Foundations
- Wenrich of Trier
- Wenzel Anton Kaunitz
- Werden
- Wessobrunn
- West Syrian Rite
- West Virginia
- Western Monasticism
- Western Schism
- Western Vicariate of the Cape of Good Hope
- Westminster
- Westminster Abbey
- Westminster Cathedral
- Westphalia
- Wheeling
- White Fathers
- Whithorn Priory
- Wibald
- Wichita
- Wichita Indians
- Widow
- Widukind
- Widukind of Corvey
- Wiener-Neustadt
- Wigand Wirt
- Wigbod
- Wilcannia
- Wilgefortis
- Wilhelm Bauberger
- Wilhelm Diekamp
- Wilhelm Emmanuel, Baron von Ketteler
- Wilhelm Heinrich Waagen
- Wilhelm Lamormaini
- Wilhelm Lindemann
- Wilhelm Molitor
- Wilhelm of Herle
- Wilhelm Tempel
- Wilhelm V, Duke of Bavaria
- Wilhelm Volk
- Wilhelm Wilmers
- Wilhelmus Nuyens
- Will
- Will and Testament of Clerics
- Willem Hessels van Est
- William
- William Allen
- William Allison
- William Allot
- William Barclay
- William Bathe
- William Bawden
- William Bede Dalley
- William Benedict Fytch
- William Bentney
- William Bernard Ullathorne
- William Bishop
- William Brown
- William Byrd
- William Byrne
- William Callyhan Robinson
- William Cassidy
- William Caxton
- William Clark
- William Clarkson Stanfield
- William Clifford
- William Courtenay
- William Crolly
- William Damasus Lindanus
- William Darrell
- William Denman
- William Detre
- William Dunbar
- William Durandus
- William Durandus, the Younger
- William Errington
- William Eusebius Andrews
- William Flete
- William Forrest
- William Gahan
- William Gaston
- William George McCloskey
- William George Ward
- William Giffard
- William Gifford
- William Habington
- William Harrison
- William Henry Anderdon
- William Henry Coombes
- William Henry Elder
- William Herincx
- William Home van Buren
- William Houghton
- William J. Hardee
- William James MacNeven
- William Jewett Tenney
- William John Fitzpatrick
- William Kreiten
- William Lockhart
- William Lyndwood
- William Malone
- William Maxwell
- William Maziere Brady
- William Monsell, Baron Emly
- William of Auvergne
- William of Auxerre
- William of Champeaux
- William of Conches
- William of Digulleville
- William of Jumieges
- William of Malmesbury
- William of Moerbeke
- William of Nangis
- William of Newburgh
- William of Ockham
- William of Poitiers
- William of Ramsey
- William of Sens
- William of Shoreham
- William of St-Amour
- William of St-Thierry
- William of Turbeville
- William of Tyre
- William of Vercelli
- William of Ware
- William of Wayneflete
- William of Wykeham
- William Palmer
- William Perault
- William Peyto
- William Pike
- William Poynter
- William Reynolds
- William Rishanger
- William Roper
- William Rubruck
- William Rudesind Barlow
- William Russell Grace
- William Seth Agar
- William Seton
- William Sherwood
- William Smits
- William Starke Rosecrans
- William the Clerk (Of Normandy)
- William the Conqueror
- William the Walloon
- William Walsh
- William Warham
- William Weathers
- William Weston
- William Wright
- William, Abbot of Marmoutiers
- Williamites
- Williram
- Wilmington
- Wilton Abbey
- Wimborne Minster
- Windesheim
- Windows in Church Architecture
- Windsor
- Winifred Maxwell
- Winnebago Indians
- Winona
- Wipo
- Wisconsin
- Witchcraft
- Witness
- Wittenberg (City and University)
- Wladislaw
- Wolfgang Amadeus Mozart
- Wolfram von Eschenbach
- Woman
- Wood-Carving
- Words (In Canon Law)
- Works of St. Augustine of Hippo
- Wuerzburg
- Wurtemberg
- Wurzburg Abbeys
- Wyoming