Pennsylvania - Criteria: C (architecture/engineering)
| White Rock Forge Covered Bridge |
| Whitford Garne |
| Whitford Hall |
| Whitford Station House |
| Whitpain Public School |
| Whitsett Historic District |
| Whittier, John Greenleaf, School |
| Wickersham, Gideon, Farmstead |
| Widow Maloby's Tavern |
| Widow Piper's Tavern |
| Wightman School |
| Wiley-Cloud House |
| Wilhelm Mansion and Carriage House |
| Wilkinson House |
| Willard, Francis E., School |
| William Penn Hotel |
| Williamsburg Historic District |
| Williams, Ellis, House |
| Williams, John, Farm |
| Williams, John, House |
| Williamsport Armory |
| Williamsport City Hall |
| Williams, Roger, Public School No. 10 |
| Willow Mill Complex |
| Wills Hospital |
| Willson, Thomas A. and Co. |
| Wilmot Mansion |
| Wilpen Hall |
| Wilson College |
| Wilson, George, Homestead |
| Wilson, Levi, Tavern |
| Wilson, Robert, House |
| Wilson, Woodrow, Junior High School |
| Windber Historic District |
| Windom Mill Farm |
| Windsor Forge Mansion |
| Winings, Jacob, House and Clover Mill |
| Wirts House |
| Wisner, Jacob, House |
| Wissahickon |
| Wissahickon Inn |
| Wissahickon Memorial Bridge |
| Wister, Mary Channing, School |
| Witherspoon Building |
| Witherup Bridge |
| Wolf, George, School |
| Wolf, Penrose, Building |
| Wolley Stille |
| Wollner Building |
| Woman's Club of Warren |
| Woman's Medical College of Pennsylvania |
| Womelsdorf Historic District |
| Woodcrest |
| Woodford |
| Woodland |
| Woodland Station |
| Woodlands, The |
| Woodland Terrace |
| Woodledge |
| Woodmont |
| Woods, John, House |
| Woodvale Historic District |
| Woodward Hill Cemetery |
| Woodward Inn |
| Woolslair Elementary School |
| Work, Col. John, House |
| Worlds End State Park Family Cabin District |
| Wormley, John, House |
| Worth-Jefferis Rural Historic District |
| Wright, Enoch, House |
| Wright, Richardson L., School |
| Wright's Ferry Mansion |
| Wrightstown Friends Meeting Complex |
| Wrightstown Octagonal Schoolhouse |
| Wrightsville Historic District |
| Wyck House |
| Wycombe Village Historic District |
| Wyeth, N.C., House and Studio |
| Wyncote Historic District |
| Wynnestay |
| Wyoming Monument |
| Wyoming Seminary |
| Yardley Historic District |
| Y Covered Bridge No. 156 |
| Yeakle and Miller Houses |
| Yeakle's Mill Bridge |
| Yeates, Jasper, House |
| Yoder Mill |
| York Armory |
| York Central Market |
| York Dispatch Newspaper Offices |
| York Historic District |
| York Meetinghouse |
| Young, Joseph, House |
| Young Men's Christian Association |
| Young, Robert, House |
| Young, Smyth, Field Company Building |
| Yuengling, Frank D., Mansion |
| Zeigler, John, Farm House |
| Zeller, Heinrich, House |
Data from United States Park Service and Wikidata
