Francis James Gillen (28 October 1855 – 5 June 1912), also known as Frank Gillen, was an early Australian anthropologist and ethnologist.
He is known for his work with W.
Baldwin Spencer, including their seminal work The Native Tribes of Central Australia (1899).
They both worked in central Australia, where Gillen was employed as a telegraph station master, with the Arrernte people and other Indigenous Australians.