Jakob Georg Christian Adler (8 December 1756 in Arnis near Kappeln, Schleswig – 22 August 1834 in Giekau near Lütjenburg) was a German Generalsuperintendent for Holstein and Schleswig, Orientalist, Syriac language professor at the University of Copenhagen, Lutheran theologian, Oberkonsistorialrat, book writer, religious educator, coin collector and head of the Schleswig-Holsteinische Bibelgesellschaft.
Jacob Georg Christian Adler was the son of Georg Christian Adler and a relative of Caspar Aquila and Matthias Claudius. Adler received private education from his father and attended the Christianeum Hamburg. Then he studied theology at the University of Kiel and oriental studies under Oluf Gerhard Tychsen at the University of Bützow and Rostock. He wrote several books on Syriac language and ancient Arabian language, about a long stay in Rome etc.