WISCONSIN SURNAMES: W-X-Y-Z
| SURNAME | COUNTY | RESEARCHER | WEBSITE |
| Wade | Jackson | Ruth | |
| Wade | Jackson | Ruth Peterson | |
| Wagner | Clark | M. Luning | |
| Wagner | Washington, Fond du Lac | Michelle Savre-Hansen | |
| Wagner | Door | Linda Burke | |
| Wagnild | Dunn | Maryellen Jacobson | |
| Waier | Milwaukee | Mary Jo Douglass | |
| Walker | Waushara | Jan Cortez | |
| Walquist | Racine | Ann Albert | |
| Walsh | Oneida | Sue Langus | |
| Walsh | Dodge | Charles C. Young | |
| Walsh | Dodge | Charles Young | |
| Walsh | All | Tim Gonnering | |
| Walter | Waukesha, Washington, Milwaukee | Dawn | |
| Wanta | Portage | Betty Martz | |
| Wanvig | Racine | Lynn | |
| Ward | Crawford | Roxanne Munns | WEBSITE |
| Ward | Winnebago | Sandy Caldwell | |
| Warmuth | Fond du Lac | Darci | |
| Warren | Waupaca | Pam Stratton | |
| Warren | Jackson | Debby | |
| Warrichaiet | Rock, Brown, Marinette, Oconto | Jeanne Reince Koller | |
| Washburn | Monroe, LaCrosse | Gail E. Sparrow | |
| Wasserbburger | Washington | LaVerne | |
| Waterman | Sheboygan | Amy Kistner | |
| Waters | Grant, Iowa, Lafayette | Jeri Thorpe | |
| Watling | Columbia | Karolyn Roberts | WEBSITE |
| Waxon | St.Croix | gdf@win.bright.net | |
| Wayerski | Portage | Brian Gaber | |
| Webber/Weber | Chippewa, Sauk | Stangern@aol.com | |
| Weber | Milwaukee | Jackie Lowe | |
| Weber | Dodge, Fond du Lac | Dana Kellerman | |
| Weber | Sheboygan | Ron Richter | |
| Webster | Oneida | Mike Henryicehky | |
| Weckwerth | Marquette | Rick Schultz | |
| Wedler | Lincoln | Francis Montabon | |
| Weeden | Richland | Dana Weeden | WEBSITE |
| Weekley | Rusk | Bob Heck | WEBSITE |
| Wehner | Kenosha | Ellen J Curnes | |
| Wehrle/Werley | Crawford, Grant | Carolyn Lane | |
| Wehrman/Wehrmann | Pierce | Darrow Wehrman | |
| Weiand | Manitowoc | Roberta Smith | |
| Weidner | Milwaukee | Mary | |
| Weinert | Taylor | Gordon Gehrig | |
| Weinert | Washington, Wood | Lori Scheller | |
| Weinheimer | Dodge | Vicki | |
| Weinlein | Milwaukee | Marcia Bastian | |
| Weir | Washington | Terri Phelan | WEBSITE |
| Weishan | All | Joy | |
| Weishoff | All | Neil Giffey | |
| Weiss | Walworth | Paul Stamm | |
| Weissert | Racine | Don & Joan Johnson | |
| Weiter | Manitowoc | Cindy (Howe) Yungwirth | |
| Weller | Milwaukee | Kathy Weller Medick | |
| Wells | Waushara, Green Lake, Fond du Lac, Racine | Jacqueline Thompson | |
| Welsh | Marathon, Green Lake | Vicki Welsh-Genrich | |
| Welsh | Waukesha | Lois Martin | |
| Wendorf | Dodge | John Wendorf | |
| Wendsikowski | Shawano, Brown, Oconto | Victoria L. German | |
| Wendt | Washington, Marathon | fweraasch@worldnet.att.net | |
| Wenham | Jefferson, Rock | Lynne Bliss | |
| Wenig | Milwaukee | ejpaik@qwksilvr.com | |
| Wennerstrand | Taylor | Robert Wennerstrand | |
| Wenninger | Price | Nancy | |
| Wenninger | Milwaukee | Dale Miller Payne | |
| Wenzel | Washington | Jeannette Schwarz | |
| Werner | Chippewa | Maryellen Jacobson | |
| Wertschnig | Milwaukee | Jean | WEBSITE |
| Wertz | Fond du Lac | Sandy Poirier | |
| Wertz | Outagamie | Nancy Westenfield | WEBSITE |
| West | Waukesha | Julie Rosales | |
| Westergaard | Oconto | SWestrgard@aol.com | |
| Westgate | Polk | Sherri Golightly | |
| Westphall | Jefferson, Dodge, Rock, Walworth | Cheryl Baker | |
| Wethern | Pierce | bootz396@texomaonline.com | |
| Wetzel | Shawano | Darlene Winter | |
| Wexelbaummer | All | Laurel Stine | |
| Weyers | Sheboygan, Calumet, Brown, Outagamie, Price | Mary Silvernail | |
| Weyers | Sheboygan, Calumet, Brown, Outagamie, Price | Cindy Johnson | |
| Whalen | Columbia | belizemcb@aol.com | |
| Whalen | Lafayette | Peggy Petersen | |
| Wharmby | Dane | Anita Jean Fish Gohl | |
| Wheaton | Lafayette, Portage, Marathon | Terry Kniess | |
| Wheelock | Jefferson, Walworth, Rock | Dale Wheelock | |
| Whipple | Pierce | bootz396@texomaonline.com | |
| Whitcomb | Dodge, Clark, Monroe | Ken Whitcomb | |
| White | All | Mary Fell | |
| White | St. Croix | Kathy | |
| White | Lafayette | Janice Danielson | |
| White | Iowa | Cheryl Ehlers | |
| White | Dunn, Eau Claire | Gene Johnston | |
| White | Wood | Marg McEuen | |
| White | Vernon | Joni | |
| White | Vernon | Joni Macfadden | |
| Whiting | Fond du Lac | Kathy | |
| Whitney | Vernon | Joni | |
| Whitney | Vernon | Joni Macfadden | |
| Whittingham | Columbia & Wood | Lori A. Hanna | |
| Wick/Wieck | Sheboygan | Kevin Wick | |
| Wicks | Shawano | tlumacov@hotmail.com | |
| Widmer | Vernon | Mark McVey | |
| Wiedenhaft | Oconto | Luvcaro@aol.com | |
| Wiedenhaft | Oconto | Nancy Westenfield | |
| Wierschke | Brown | rmjohns@wt.net | |
| Wierzba | Portage | Betty Martz | |
| Wieting/Wieteng | Calumet, Manitowoc, Sheboygan, Fond du Lac | Carol Awe Mayfield | |
| Wilde | Dodge | John Wendorf | |
| Wilder | Crawford | Lois Sparling | |
| Wilhelmi | Clark | Beth Sternhagen | |
| Willard | Jefferson | Wilma Haynes | |
| Williams | LaCrosse | Etta Larson | |
| Williams | Green. Lafayette | Cathy Kubly | |
| Williams | Outagamie | Virginia McKenzie | |
| Williams | Rock, other | Anita Acosta | |
| Williams | Vernon | Joni Macfadden | |
| Williamson/Wilhelmson | Sawyer | Barbara Williamson | |
| Willibalt | Milwaukee | Rick Schultz | |
| Nelson | Waukesha | Gerald Gallitz | |
| Williscroft | Polk | Deb Merriweather | |
| Wilmot | Grant, Price | Brian Christensen | |
| Wiltse | Green Lake, Columbia | Lori A. Hanna | |
| Winchester | Adams | Penny Winchester | |
| Windeknecht | Taylor | John Windeknecht | |
| Wines | Oconto, Marinette, Oneida | Anne Taylor-Czaplewski | |
| Winkler | Taylor, Price | Cindy Johnson | WEBSITE |
| Winkler | Calumet | Ron Richter | |
| Winslow | Lincoln | Cindy Bergeron Scherwinski | |
| Wirottmann | Fond du Lac | Mel and Joan Frahm | |
| Wisniewski | Iron, Kenosha | Ellen J Curnes | |
| Wiszkowski | Shawano, Brown, Oconto | Victoria L. German | |
| Wold | Dunn, Eau Claire | Gene Johnston | |
| Wolenec | Iowa | gwolenec@ro.com | |
| Woletz | Eau Claire | Roxanne Munns | WEBSITE |
| Wolf | Outagamie, Winnebago | Mel and Joan Frahm | |
| Wolf | Richland | Loretta Craig | |
| Wolff | Marathon, Lincoln | Laurel Stine | |
| Wolff | Outagamie | Darlene Wolff Harbick | |
| Wolfmeyer | Calumet | Stacey Barton | |
| Wollangk | Winnebago | Judy Wollangk | |
| Woller | Marathon | Mary Haugland | |
| Wolski | Green Lake | Keith Miskie | |
| Wood | Fond du Lac | Ron Friedel | WEBSITE |
| Wood | Iowa, Grant | Ellen Mueller | |
| Wood/Woods | Wood | Susie | |
| Woodard | Waukesha | Judie French | |
| Woods | Barron | Nancy Baldwin | |
| Woodward | Eau Claire | Dale Miller Payne | |
| Wopat | Vernon | Elizabeth Sebranek | |
| Worchel | Clark | M. Luning | |
| Wray | Douglas, Washburn | Pam Johnson | |
| Wren/Wrin/Renn | Waukesha | Bob Cummings | |
| Wright | All | Tim Gonnering | |
| Wright | Eau Claire | Gene Johnston | |
| Wright | Polk, Washburn | Deb Merriweather | |
| Wunderlich | Waukesha | Bob Cummings | |
| Wunsch | Marathon | Beeves | |
| Wunsch | LaCrosse, Vernon | Linda Lower | |
| Wyman | Eau Claire, Jefferson | Nancy Sabatke | |
| Wypisynski | Marinette | Richard Voeltzke | |
| Wysocki | Milwaukee | Jayme Beyrer | |
| Yach | Portage | Betty Martz | |
| Yager | Fond du Lac | Ron Richter | |
| Yon | Calumet, Fond du Lac, Manitowoc | Ron Richter | |
| Young | Milwaukee | Charles Young | |
| Young | Crawford | Roxanne Munns | WEBSITE |
| Young | Pierce, Polk | gdf@win.bright.net | |
| Young | Richland, Sauk | Ethel Handley | |
| Youse | Richland | Karla Staudt | |
| Yungwirth | Fond du Lac | Cindy (Howe) Yungwirth | |
| Zaborowski | Portage | Betty Martz | |
| Zache | Racine | Lynn | |
| Zacherl | Dodge, Fond du Lac, other | Patricia Bartelmey | |
| Zaleski | Marathon | Char Zaleski | |
| Zamrzla | Jackson | Julie Rosales | |
| Zander | Waukesha, Washington, Milwaukee | Dawn | |
| Zanzig | Oconto | Nancy Westenfield | |
| Zanzig | Outagamie | Luvcaro@aol.com | |
| Zarbock | Pierce | gdf@win.bright.net | |
| Zaun | All | Marlene Trader Molisee | |
| Zautner | Jefferson | Dave Hinz | |
| Zblewski | Portage | Betty Martz | |
| Zdziarski/zdziarstek/Zdiarstek | Shawano, Brown, Oconto | Victoria L. German | |
| Zeh | Walworth, Rock | Bruce Gerber | |
| Zeichert | Shawano, Waupaca | tlumacov@hotmail.com | |
| Zeige | Milwaukee, Ozaukee, Racine | David Jarvis-Schroeder | |
| Zerfluh | All | Lynn Key | |
| Zick | Calumet | Stacey Barton | |
| Ziebell | Jefferson, Dane & Rock | Carolyn O'Brien | |
| Ziegan | Calumet | Ron Richter | |
| Ziegan | Outagamie | Ron Richter | |
| Ziegenfuss | LaFayette, Grant, Iowa | Sandra L. Everson | |
| Ziegler | Dane | JRAM12@aol.com | |
| Ziegohn | Marinette | Jim Cook | |
| Ziehl | Dunn | Vnvet95b@aol.com | |
| Ziemann | Milwaukee | Sally | WEBSITE |
| Zilke | Milwaukee | Mary Jo Douglass | |
| Zilmer | Jefferson | Shirley Morales | |
| Zimar | Sheboygan | Ron Richter | |
| Zimmel | Dodge | srbowe@wolf.co.net | |
| Zimmerman | Green | Daun Donyes | |
| Zimmermann | Dodge | srbowe@wolf.co.net | |
| Zimmerman | Jefferson, Dodge | Cheryl Baker | |
| Zinda | Portage | Betty Martz | |
| Zinke | Columbia | Karolyn Roberts | WEBSITE |
| Zinns | Manitowoc | grichmon@localnet.com | |
| Zintz | Richland | Margaret Jordan | |
| Zipp | All | Thelma Heinrich | |
| Zobel | Eau Claire | Dale Miller Payne | |
| Zochert | Dodge, Marathon, Sauk, Milwaukee | Dar Hackle | |
| Zoller | Racine | Darci | |
| Zoromski | Portage | Betty Martz | |
| Zuill | Rock | Paul Stamm | |
| Zupanic | Milwaukee | Ron Richter | |
| Zurawski | Portage | Betty Martz | |
| Zutter | Chippewa, Eau Claire | Laurie Nelson | WEBSITE |
| Zywicki | Portage | Betty Martz |