Lotte Jacobi (August 17, 1896 – May 6, 1990) was a leading American portrait photographer and photojournalist, known for her high-contrast black-and-white portrait photography, characterized by intimate, sometimes dramatic, sometimes idiosyncratic and often definitive humanist depictions of both ordinary people in the United States and Europe and some of the most important artists, thinkers and activists of the 20th century.