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| David LaChapelle | Fashion |
| Vincent Laforet | Aerial & more |
| Rosemary Laing | Gravity |
| Dorothea Lange (1895-1965) | Migrant Mother & more |
| Ida G. Lansky | Still lifes |
| Jacques Henri Lartigue (1894-1986) | Flying machines, his sister, ladies on the boulevard, & more, including autochromes |
| Clarence John Laughlin (1905-1985) | Surrealism, New Orleans |
| George Lawrence | Aerial |
| Marcus Leatherdale | India |
| Nikki S. Lee | Becomes part of subcultures, such as rural, punk, & exotic dancer |
| Russell Lee | Farm Security Administration |
| Arthur Leipzig | NYC |
| Catherine Leroy | Viet Nam war |
| Helen Levitt | Street |
| Builder Levy | Miners |
| Jerome Liebling | Documentary |
| O. Winston Link | Steam trains & Americana |
| Edgar Lissel | Uses cyanobacteria cultures in Petrie dishes to create photographic images |
| El Lissitzky | Photomontage |
| Herbert List | Portraits & nudes |
| Liu Zheng | Surrealism |
| John Loengard | LIFE magazine |
| George Platt Lynnes | Nudes |
| Danny Lyon | Biker gang, prison life |
| Loretta Lux | Children |