Thomas Child was an English photographer and engineer best known for his pioneering photography work in China. Child produced a large body of photographs during his time in Beijing in the 1870s and 1880s, a time when virtually no other photographers operated in the city. During the two decades he spent in China, Child compiled the earliest comprehensive photographic catalogue of the customs, architecture, and people of late Qing dynasty Beijing. A keen photographer of architecture, some of Child's images are among the earliest and the only known photographic records of their architectural subjects.