Thomas Day Seymour (April 1, 1848 - December 31, 1907) was an American classical scholar.
Born in Hudson, Ohio, Seymour graduated in 1870 at Western Reserve College, where his father, Nathan Perkins Seymour, was Long Professor of Greek and Latin.
After studying in Berlin and Leipzig, Seymour returned to Western Reserve College as professor of Greek from 1872-1880 before becoming professor of Greek at Yale University in 1880, holding his position until his death in New Haven.
From 1887 to 1901 Seymour was chairman of the managing committee of the American School of Classical Studies at Athens, and was president of the Archaeological Institute of America from 1903.
He was the father of Yale President Charles Seymour, and the great-nephew of Yale President Jeremiah Day.
Other than his Selected Odes of Pindar (1882), Seymour's published work was largely confined to the study of the Homeric poems, viz:
He edited, with Lewis R Packard and John W White, the College Series of Greek Authors.
This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.