California - Significance region: Local
| Lincoln Public Library |
| Lincoln School |
| Lincoln Theater |
| Lisbon Winery |
| Live Oak Creamery |
| Live Oak Historic Commercial District |
| Live Oak Ranch |
| Livermore Carnegie Library and Park |
| Llano Road Roadhouse |
| Locke House |
| Locke House and Barn |
| Locke's Meat Market |
| Loewy House |
| Lombardo Ranch |
| Lompoc Public Library |
| Lompoc Veterans Memorial Building |
| Long Beach Professional Building |
| Longley, Howard, House |
| Loomis Vistor Center, Bldg. 43 |
| Lopez Adobe |
| Lorenz Hotel |
| Loring House |
| Los Altos Apartments |
| Los Angeles Central Library |
| Los Angeles City Hall |
| Los Angeles Nurses' Club |
| Los Angeles Pacific Company Ivy Park Substation |
| Los Banos del Mar |
| Los Feliz Boulevard Courtyard Apartments Historic District |
| Los Feliz Village Multi-Family Residential Historic District |
| Los Gatos Historic Commercial District |
| Los Rios Street Historic District |
| Lotta Crabtree Fountain |
| Louie's Place |
| Lovejoy Homestead |
| Lovell House |
| Lower Blackburn Grade Bridge |
| Luiseno Ancestral Origin Landscape |
| Lukens, Theodore Parker, House |
| Lumsden, W. H., House |
| Lydia, The |
| Lyford, Benjamin and Hilarita, House |
| Lyford's Stone Tower |
| Lynwood Pacific Electric Railway Depot |
| Lyons, Harrison, Homestead Historic District |
| Lyons Ranches Historic District |
| Lyon, W. Parker, House |
| Machell-Seaman House |
| Madera County Courthouse |
| Madison House |
| Madison Park Apartments |
| Madrona Knoll Rancho District |
| Magalia Community Church |
| Main Building |
| Main Post Office and Federal Building |
| Main Street Historic Commercial District |
| Main Street Historic District-Winters |
| Malabar Branch |
| Malaga Cove Plaza |
| Malibu Historic District |
| Manasse, Edward G., House |
| Manasse Mansion |
| Manchester Schoolhouse |
| Mansion House Hotel |
| Marconi Wireless-Synanon Tomales Bay Headquarters Historic District |
| Marengo Gardens |
| Marentis House |
| Marguerita Lane Historic District |
| Marin Art and Garden Center |
| Marin City Public Housing |
| Marinship Machine Shop |
| Mariona |
| Mariposa County High School Auditorium |
| Mariposa Grove Museum |
| Mariposa Street Bridge |
| Market Street Theatre and Loft District |
| Markham Place Historic District |
| Marl Springs Corral |
| Marsh, Martin Luther, House |
| Marston, George W., House |
| Martin Building |
| Martinez Canyon Rockhouse |
| Martinez City Library |
| Martinez Downtown Post Office |
| Martinez Grammar School Annex |
| Mar Vista Gardens |
| Mary Louise Court |
| Mary’s Cave |
| Marysville Historic Commercial District |
| Masonic Temple |
| Masonic Temple |
| Masonic Temple |
| Masonic Temple and Lodge |
| Masonic Temple-Naval Lodge No. 87, Free and Accepted Masons |
| Mathews, Arthur C. and Judith, House |
| Matson Building and Annex |
| Maulbridge Apartments |
| Maulhardt, Gottfried, Farm |
| Maxfield Building |
| Maxwell Creek Bridge on Hardin Road |
Data from United States Park Service and Wikidata
