California - Significance region: Local
| Maydestone Apartments |
| Mayfair Hotel |
| May Lake High Sierra Camp |
| Maywood Woman's Club |
| McCallum, Roy D., House |
| McCarty Memorial Christian Church |
| McCauley and Meyer Barns |
| McCauley Cabin |
| McClatchy, C.K., Senior High School |
| McClintock Storage Warehouse |
| McCrea House |
| McCullagh-Jones House |
| McDonald, D. C., Building |
| McDonald Mansion |
| McElroy Octagon House |
| McFarlan, George, House |
| McGurk Cabin |
| McHenry Mansion |
| McMullen, John, House |
| McNally, Andrew, House |
| McNally's Windemere Ranch Headquarters |
| McNear, Erskine, B., House |
| Medico-Dental Building |
| Meek Mansion and Carriage House |
| Mello, Clarence and Mary, House |
| Melrose-Backs Neighborhood Houses |
| Melrose Baptist Church |
| Memorial Branch |
| Memorial Hall |
| Mendocino and Headlands Historic District |
| Menlo Avenue-West Twenty-ninth Street Historic District |
| Mentor Court |
| Merced County Courthouse |
| Merced County High School |
| Merced Grove Ranger Station |
| Merced Lake High Sierra Camp |
| Merced Lake Ranger Station |
| Merced Theatre |
| Merchants National Bank of Sacramento |
| Merrill, Charles W., House |
| Merrill, Samuel, House |
| Merrium Apartments |
| Merwin House |
| Mescal Mining District |
| Mesick House |
| Messina Orchard |
| Methodist Episcopal Church at Half Moon Bay |
| Methodist Episcopal Church of Pescadero |
| Meux House |
| Middough Brothers-Insurance Exchange Building |
| Midway-Sunset Jack Plant |
| Migliavacca House |
| Milano Hotel |
| Milbank, Isaac, House |
| Mildred Ann Archeological Site |
| Mill Creek Zanja |
| Miller and Herriott House |
| Miller, Grace Lewis, House |
| Miller-Melone Ranch |
| Miller Red Barn |
| Miller, Warren P., House |
| Milliken Creek Bridge |
| Mills Building and Tower |
| Milpitas Grammar School |
| Miltimore House |
| Minerva Club of Santa Maria |
| Minter, George W., House |
| Miracle Mile Apartments Historic District |
| Mirlo Gate Lodge Tower |
| Mish House |
| Mission Brewery |
| Mission Court |
| Mission Court Bungalows |
| Mission Cultural Center |
| Mission Nuestra Senora de la Soledad Historic District |
| Mission San Miguel Arcangel |
| Miss Orton's Classical School for Girls (Dormitory) |
| Mohnike Adobe |
| Mohr and Yoerk Market |
| Moir Building |
| Molino Lodge Building |
| Monday Club of San Luis Obispo |
| Moneta Branch |
| Mono County Courthouse |
| Montanez Adobe |
| Montebello Woman's Club |
| Montecito Apartments |
| Montecito Ranch House |
| Monterey County Court House |
| Monterey Street Historic District |
| Monte Vista and Diamond Mountain Vineyard |
| Montgomery Way Gateway Historic District |
| Moore, James, House |
| Moraga Adobe |
| Moro Rock Stairway |
| Morro Bay State Park Trailer and Tent Campground |
| Morse, LeGrand, House |
| Morse-Skinner Ranch House |
| Moss Flats Building |
| Mountain House Historic District |
Data from United States Park Service and Wikidata
