Thomas Marsham (1748–26 November 1819)[1][2] was an English entomologist, specializing on beetles.
[3] He married a Miss Symes of Ufford, Northants, and had two daughters.
He was Secretary to the West India Dock Company for many years and during the Napoleonic Wars became an officer in the volunteer corps of the Home Guard in 1802.
He was a friend of James Francis Stephens, William Kirby and Alexander Macleay .
Marsham's collection, purchased by James Francis Stephens, is in the Natural History Museum along with some manuscripts.