All - Constructed - 1910–1919
| Gentry Grand Army of the Republic Monument |
| Geodetic Center of the United States |
| George Close Company Building |
| Germania Hall |
| Germania Life Insurance Company Building |
| Gibson, Inc. Factory and Office Building |
| Gilfillin and Houston Building |
| Gilliland, Lewis T., House |
| Glendive City Water Filtration Plant |
| Glendive Heat, Light and Power Company Power Plant |
| Glen Tavern Hotel |
| Glick-Orr House |
| Goddard Hall |
| Goff House |
| Goldman House |
| Goodbar, Lafayette, House |
| Goodland City Library |
| Goodwill Industries Building |
| Gorsett Farmstead |
| Goshen Town Hall |
| Grace Methodist Episcopal Church |
| Grace Methodist Episcopal Church |
| Grand Avenue Temple and Grand Avenue Temple Building |
| Grand Central Terminal |
| Grande, Charles, House |
| Grand Lodge of the Colored Knights of Pythias, Texas |
| Grand Rapids Savings Bank Building |
| Grand Theatre |
| Granite Park Chalet |
| Grant, Gooden, House |
| Grant-Lee Hall |
| Grant, U.S. Hotel |
| Grant Vocational High School |
| Granville-Mott House |
| Graphic Arts Building |
| Gray, John P. and Stella, House |
| Great Basin Research Station Historic District |
| Great Lakes Naval Training Station |
| Great Onyx Cave Entrance |
| Green, Alvin and Annie, House |
| Green Bay and Western Railroad Depot |
| Greenblatt, Samuel, House |
| Greene, John T., House |
| Green, Garner Wynn, House |
| Greenleaf, Abbie, Library |
| Greensburg Railroad Station |
| Greenville County Courthouse |
| Greenwood School |
| Greenwood, The |
| Greer Depot |
| Gresham Carnegie Library |
| Gretzinger, Otto and Hilda, House |
| Griffen House |
| Griffin, Cornish, Round Barn |
| Grimsley, John Clifford, House |
| Grosse Pointe Yacht Club |
| Grove, Claud D. and Berenice Sinclair Grove House |
| Grove Park Historic District |
| Grove Park Inn |
| Gruen Watch Company-Time Hill |
| Guilford Courthouse National Military Park |
| Guitreau House |
| Guldner House |
| Gutknecht, Edwin and Jennie, House |
| Hacienda Casa del Frances |
| Hadley House |
| Hadley Mountain Fire Observation Station |
| Hager House |
| Hagerstown City Park Historic District |
| Hainz, Edward, House |
| Hakone Historic District |
| Hale Creek Bridge |
| Hales, W. T., House |
| Hall Cabin |
| Halle Building |
| Hall of the Divine Child |
| Hall School |
| Halone, Alex, House |
| Halstead Santa Fe Depot |
| Hamburg-America Shipping Line Administrative Offices |
| Hamburg Public Library |
| Hamilton Round Barn |
| Hamlin County Courthouse |
| Hamm Building |
| Hampton Park Terrace Historic District |
| Hams Bluff Light |
| Hancock Apartment Building |
| Hanksville Meetinghouse-School |
| Hanson, Anton, E., House |
| Hanten, John B., House |
| Hardin County Courthouse |
| Harriman, Henry I., House |
| Harris Bridge |
| Harris, Joel Chandler, House |
| Harrison, C. Lewis, House |
| Harrison High School |
| Harrison, Sen. James A., House |
| Hartsdale Railroad Station |
| Hartwell House |
| Hawarden City Hall, Fire Station and Auditorium |
Data from United States Park Service and Wikidata
