Jonas (Jean) Otter (Kristianstad, Sweden, October 1707 – Paris, September 1748) was a Swedish traveler in the Ottoman and Persian Empires, known for his book Voyage en Turquie et en Perse, avec une Relation des Expeditions de Tahmas-Kouli-Khan (1748), based on his ten years in the Middle East. In January 1734, the Count of Maurepas sent him to Constantinople, where he stayed with the French Minister, Villeneuve, to study Arabic and Turkish. He also became acquainted with the Ottoman official and publisher Ibrahim Muteferrika and the Ottoman governor of Baghdad, Ahmad Pasha. He died in 1748.