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- Waddesdon Manor (7 artworks) – Aylesbury, UK – artworks
- Wadsworth Atheneum (24 artworks) – Hartford, CT, USA – artworks
- Waizenkirchen Saint Peter and Paul Parish Church (1 artworks) – Waizenkirchen, Austria – artworks
- Wakayama Museum of Modern Art (0 artworks) – Wakayama, Japan
- Wake Forest University Art Collections (2 artworks) – Winston-Salem, NC, USA – artworks
- Waldemarsudde (1 artworks) – Stockholm, Sweden – artworks
- Walker Art Center (70 artworks) – Minneapolis, MN, USA – artworks
- Walker Art Gallery (26 artworks) – Liverpool, UK – artworks
- Wallace Collection (97 artworks) – London, UK – artworks
- Wallington (1 artworks) – Cambo, UK – artworks
- Wallraf-Richartz Museum (101 artworks) – Cologne, Germany – artworks
- Walters Art Museum (13 artworks) – Baltimore, MD, USA – artworks
- Warner Collection at Gulf States Paper Corporation (1 artworks) – Tuscaloosa, AL, USA – artworks
- Weatherspoon Art Museum (0 artworks) – Greensboro, NC, USA
- Weisman Art Museum (20 artworks) – Minneapolis, MN, USA – artworks
- Wellington Museum (Apsley House) (7 artworks) – London, UK – artworks
- West Dean College (3 artworks) – Chichester, UK – artworks
- Westfalisches Landesmuseum (2 artworks) – Münster, Germany – artworks
- Westminster Abbey (1 artworks) – London, UK – artworks
- Westmoreland Museum of American Art (7 artworks) – Greensburg, PA, USA – artworks
- Weston Park (1 artworks) – Weston-under-Lizard, UK – artworks
- Wexner Center for the Arts (1 artworks) – Columbus, OH, USA – artworks
- White House (2 artworks) – Washington, DC, USA – artworks
- Whitney Museum of American Art (20 artworks) – New York, NY, USA – artworks
- Whitworth Art Gallery (2 artworks) – Manchester, UK – artworks
- Whyte Museum (0 artworks) – Banff, Canada
- Wichita Art Museum (2 artworks) – Wichita, KS, USA – artworks
- Wien Museum (15 artworks) – Vienna, Austria – artworks
- Wiertz Museum (2 artworks) – Brussels, Belgium – artworks
- Wies Pilgrimage Church - Wieskirche (2 artworks) – Steingaden, Germany – artworks
- Wilanow Museum Palace (0 artworks) – Warsaw, Poland
- Wilhelm Lehmbruck-Museum (4 artworks) – Duisburg, Germany – artworks
- William Benton Museum of Art (1 artworks) – Storrs, CT, USA – artworks
- William Morris Gallery (2 artworks) – Walthamstow, UK – artworks
- Williams College Museum of Art (1 artworks) – Williamstown, MA, USA – artworks
- Wilton House (3 artworks) – Wilton, UK – artworks
- Winnipeg Art Gallery (2 artworks) – Winnipeg, Canada – artworks
- WIP:STHLM (1 artworks) – Stockholm, Sweden – artworks
- Wolfsonia - The Wolfson Collection (0 artworks) – Genova, Italy
- Woolsthorpe Manor (1 artworks) – Woolsthorpe-by-Colsterworth, UK – artworks
- Worcester Art Museum (17 artworks) – Worcester, MA, USA – artworks
