California - Significance region: Local
| Watsonville City Plaza |
| Watsonville-Lee Road Site |
| Watson Well Corral |
| Watts Building |
| Watts Happening Cultural Center |
| Watts Station |
| Watts & Tannahill Company Store |
| Waybur, Julian, House |
| We and Our Neighbors Clubhouse |
| Weaver, Henry, House |
| Webber, John Lee, House |
| Webber Lake Hotel |
| Webster Schoolhouse, Old |
| Wednesday Club of Suisun |
| Weedpatch Camp |
| Wee Kirk |
| Weinberger, J.C., Winery |
| Welch-Hurst |
| Weller House |
| West Butte Schoolhouse |
| Westerfeld, William, House |
| Western Manufacturing Company Building |
| Westlake Theatre |
| West Miner Street-Third Street Historic District |
| Westminster Place Historic District |
| Westminster Presbyterian Church |
| Westminster Presbyterian Church and Cemetery of Tremont |
| West Point Inn |
| West Side Bank |
| Wetmore House |
| Wetzlar, Julius, House |
| Wexler House |
| Whalers Cabin |
| Whaley House |
| Wheatland Masonic Temple |
| Wheeler Hospital |
| Whelan, John A., House |
| Whifler, William A., House |
| White Mansion |
| White, Michael, Adobe |
| White's Gulch Arrastra |
| Whitley Court |
| Whitmore, Daniel, House |
| Wigwam Village No. 7 |
| Wiipuk uun'yaw Trail |
| Wilcox, Benjamin, House |
| Wilford, Albert, Houses |
| Williams, E. Stewart and Mari, House |
| William Shipsey House |
| Williams, Roger Y., House |
| William Tell Saloon and Hotel |
| Willits Carnegie Library |
| Willmore, The |
| Willows-Glenn County Airport |
| Wilmington Branch |
| Wilshire Branch |
| Wilshire Vista West Historic District |
| Wilson House |
| Wilsonia Historic District |
| Wilson, Warren, Beach House |
| Wilton Historic District |
| Winona Boulevard Mid-Century Modern Historic District |
| Winship-Smernes Building |
| Winters House |
| Withington, George and Eliza, House |
| Witter, Edwin, Ranch |
| Woelke, John, House |
| Wolf Store and Vail Ranch Headquarters |
| Woman’s Club of Bakersfield |
| Woman's Club of Hollywood |
| Woman's Club of Lincoln |
| Woman's Club of Lodi |
| Woman's Club of Palo Alto |
| Woman's Club of Redondo Beach |
| Woman's Improvement Club Clubhouse |
| Women's Athletic Club of Alameda County |
| Women's Improvement Club of Hueneme |
| Women's Twentieth Century Club of Eagle Rock |
| Woodbury-Story House |
| Woodland Opera House |
| Woodland Public Library |
| Woodleaf Hotel |
| Woods Wash |
| Wood, Walter B., House |
| Wright, George L., House |
| Wulff, Capt. N. H., House |
| Wynyate |
| X-100 |
| Yamanouchi, Yoshiko, House |
| Yamashiro Historic District |
| Yellow Jacket Petroglyphs |
| YMCA Hotel |
| Yolo Branch Library |
| Yolo County Courthouse |
| Yorba, Domingo Adobe and Casa Manuel Garcia |
| Yorba-Slaughter Adobe |
| York House |
| Yosemite Transportation Company Office |
| Yosemite Valley Archeological District |
| Yosemite Valley Bridges |
Data from United States Park Service and Wikidata
