Thomas Henry Dyer (4 May 1804 –30 January 1888) was an English historical and antiquarian writer.

He was originally intended for a business career, and for some time acted as clerk in a West India house; but finding his services no longer required after the emancipation of the British West Indies, he decided to devote himself to literature.

According to the Encyclopædia Britannica Eleventh Edition, it was "a conscientious and on the whole impartial work, though the character of Calvin is somewhat harshly drawn, and his influence in the religious world generally is insufficiently appreciated."

revised and continued to the end of the 19th century, by A. Hassall, 1901), which was considered "a meritorious compilation and storehouse of facts, but not very readable" by Britannica.

[1] Dyer frequently visited Greece and Italy, and wrote several "topographical" works which Britannica felt were his best.