Massachusetts - Area of significance: Architecture
| Hyde House |
| Hyde Park High School |
| Hyde School |
| Hydrant No. 3 House |
| I00F Building |
| Immaculate Conception Rectory |
| Indian Hill School |
| Indian Orchard Branch Library |
| Ingalls-Wheeler-Horton Homstead Site |
| Ingleside Avenue Historic District |
| Ingraham, Harry B., Three-Decker |
| Ingraham, Robert C., School |
| Inman Square Historic District |
| Inness-Fitts House and Studio/Barn |
| Institutional District |
| Intermediate Building |
| International Trust Company Building |
| Intervale Factory |
| Intervale Street-Blue Hill Avenue Historic District |
| Intervale Street-Columbia Road Historic District |
| Ipswich Mills Historic District |
| Ireland, Samuel, House |
| Ironstone Mill Housing and Cellar Hole |
| Irving Square Historic District |
| Isham, Herman, House |
| Island Grove Park National Register District |
| Item Building |
| Ivernia Apartment Building |
| Jack's Diner |
| Jackson Homestead |
| Jackson House |
| Jackson, Samuel, Jr., House |
| Jackson Terrace Historic District |
| Jackson, Thaddeus, House |
| Jacob's Pillow Dance Festival |
| Jacob's Pillow Dance Festival |
| James, Capt. Benjamin, House |
| James, Joseph K., House |
| Jarves, John and Mary Waterman, House |
| Jarvesville Historic District |
| Jarvis, The |
| Jefferson School |
| Jenckes, E. N., Store |
| Jenison, Robert, House |
| Jenkins, Benjamin, House |
| Jenkins, Franklin B., House |
| Jenkins, Franklin B., House |
| Jenkins, John, Homestead |
| Jenkins, Joseph, House |
| Jenkins-Whelden Farmstead |
| Jennison, Joshua, House |
| Jesus Marie Convent |
| Jewell, David L., House |
| Jewett Piano Company Building |
| JOFFRE, (shipwreck) |
| John Adams Courthouse |
| John Eliot Square District |
| John F. Kennedy Federal Building |
| Johnson, Capt. Timothy, House |
| Johnson, Edwin C., House |
| Johnson, Edwin, Three-Decker |
| Johnson House |
| Johnson, John and Edward, Three-Decker |
| Johnson, John, Three-Decker |
| Johnson, J. V., House |
| Johnson Manufacturing Company |
| Johnson, Newell D., House |
| Johnson, Paul, Three-Decker |
| Johnson School |
| Johnson-Thompson House |
| John Winthrop Chambers, The |
| Jones Block |
| Jones, Colonel Timothy, House |
| Jones, John, House |
| Jones, Marshall W., House |
| Jones Tavern |
| Jones, Thomas W., House |
| Jones, William R., House |
| Jordan, Dr. Charles, House |
| Joseph Fenno House-Woman's Friend Society |
| Joshua Bates School |
| J. R. Torrey Razor Co. and J. R. Torrey & Co. Manufacturing Facility |
| Judkins, Amos, House |
| Judson-Litchfield House |
| Judson-Taft House |
| Junction Shop and Herman Street District |
| Kaller, Erick, Three-Decker |
| Kaller, Erick, Three-Decker |
| Katz and Leavitt Apartment House |
| Keene, Walter, House |
| Kelley, Mercelia Evelyn Eldridge, House |
| Kemp Barn |
| Kemp Place |
| Kendal Green Historic District |
| Kendall, Deacon Thomas, House |
| Kenmore |
| Kennedy, F. A., Steam Bakery |
| Kennedy Park |
| Kennedy-Worthington Blocks |
| Kensely, J., House |
Data from United States Park Service and Wikidata
