Claudius James Rich (28 March 1787 – 5 October 1820) was a British business agent, traveller and antiquarian scholar,
Rich was born near Dijon 'of a good family', but passed his childhood at Bristol. Early on, he developed a gift for languages, becoming familiar not only with Latin and Greek but also with Hebrew, Syriac, Persian, Turkish and other Eastern tongues. In 1803, by the influence of friends, he was appointed a cadet in the East India Company's service. The following year he went to Constantinople, where, and at Smyrna, he stayed some time, perfecting himself in Turkish.
Proceeding to Alexandria as assistant to the British consul-general there, he devoted himself to Arabic and its various dialects, and made himself master of Eastern manners and usages. On leaving Egypt he travelled by land to the Persian Gulf, disguised as a Mamluk, visiting Damascus, and entering the great mosque undetected. At Bombay, which he reached in September 1807, he was the guest of Sir James Mackintosh, whose eldest daughter Mary he married on 22 January 1808, proceeding soon after to Baghdad as resident.
There he began his investigations into the geography, history and antiquities of the district. He explored the remains of Babylon, and projected a geographical and statistical account of the pashalic of Bagdad. The results of his work at Babylon appeared first in the Vienna serial Mines de l'orient, and in 1839 in London under the title Narrative of a Journey to the Site of Babylon in 1811.