Lida Moser (August 17, 1920 – August 12, 2014) was an American-born photographer and author, with a career that spanned more than six decades, before retiring in her 90s. She was known for her photojournalism and street photography as a member of both the Photo League  and the New York School. Her portfolio includes black and white commercial, portrait and documentary photography, with her work continuing to have an impact.
The Photo League was an early center of American documentary photography in the post war years, with membership including many of the most significant photographers of the 20th century. In a retrospective at the Fraser Gallery in Washington DC, she was described as a pioneer in the field of photojournalism. She has also been described, much to Moser’s annoyance, as the “grandmother of American photojournalism.”