Lee Passmore (January 9, 1874 – December 12, 1958) was an American photographer and field naturalist who worked with scientists and staff at the San Diego Natural History Museum documenting the flora and fauna of Southern California.

He donated his extensive collection of photographic negatives, glass slides, and Kodachrome transparencies to the San Diego Natural History Museum in 1958; these include significant collections of images on the natural history of the trapdoor spider, the carpenter bee, and the tomato sphinx moth.

Widowed between 1902 and 1910,[5] Passmore emigrated to the United States and opened a photography studio in San Diego in 1908.

[6] Passmore specialized in marine scenes from 1908 to 1912, producing a record of the transport of logs by Benson rafts.

[8][9] From the 1930s, Passmore focused his interest on field photography of natural history subjects, particularly insects and spiders.