Eldad ben Maḥli ha-Dani (, 'Eldad son of Mahli the Danite') () was a ninth-century Jewish merchant, traveller, and philologist. Though probably originally from South Arabia, he professed to be a citizen of an "independent Jewish state" in East Africa, inhabited by people claiming descent from the lost Tribes of Dan, Asher, Gad, and Naphtali. Eldad visited Babylonia, Kairouan, and Iberia, where he spread fanciful accounts of the Ten Lost Tribes and halakhot which he claimed he had brought from his native country.
