Arthur Capell (28 March 1902 – 1986) was an Australian linguist, who made major contributions to the study of Australian languages, Austronesian languages and Papuan languages.
Capell graduated from the University of Sydney in 1922 as the University medallist in Classics. He taught in high school for three years, was ordained minister of Church of England serving in the Newcastle Diocese for a decade. He pursued his linguistic studies privately, but went on to obtain an M.A. in Classics at the University of Sydney (1931). He undertook a doctoral programme at the University of London in 1935, and graduating the following year with a Ph.D. from the School of Oriental and African Studies, with a thesis on The linguistic position of south-eastern Papua, which was published in book form in 1943. His primary interest was in Oceanic Linguistics, and he is said to have regarded his research of aboriginal languages to be a matter of weekend work, though he did spend lengthy periods doing fieldwork in both the Kimberleys and Arnhem Land.
When A. P. Elkin, then Anglican rector at Morpeth was appointed to a professorship in anthropology at Sydney, Capell served as his locum tenens in the parish. On vacations back in Morpeth, Elkin was impressed by Capell's linguistic gifts, and eventually arranged a lectureship in linguistics for him in 1945. He was appointed reader in 1948.