Frederic Henry Gravely (7 December 1885 – 1965) was an eminent British arachnologist, entomologist, botanist, zoologist and student of archaeology, who conducted pioneering research and wrote extensively on various subjects during his tenure at the Indian Museum, Calcutta, and the Government Museum, Madras.

He unified the monographs of early observers with the notes of Arrow and Zang to bring to the oriental passalids (1914), and the family itself in general (1918), the classification that is in vogue today with minor alterations.

His work on Arachnida and Mollusca significantly enhanced the collections of the museum in the two zoological groups.

The most important of Dr. Gravely's many contributions to the subject was the monograph he collaborated on with T. N. Ramachandran (Curator of Archaeology 1925–1935) on the scientific basis for identifying the period of metal images.

He initiated the electrolytic restoration process which has helped preserve not only bronze objects, but also ethnological, pre-historic and numismatic collections.

It notably contain insects, Arachnida and Myriapoda from limestone caves in Burma (1911), and oriental Passalidae.