Gustav Paul Closs (1840 – 1870) was a German landscape painter.
Closs was born at Stuttgart in 1840, and received his first instructions in the State Academy of Fine Arts Stuttgart, under Heinrich Funk; but afterwards studied in Rome, Naples, Munich, Paris, and other places. He also made a number of student-tours, especially to the Chiem-See in Bavaria, on the borders of which he died in 1870 at Prien. He produced a number of Italian views, and also published Illustrations to Wieland's Oberon, a magnificent volume entitled Truth and Fiction, and Uhland and his Home at Tübingen, the plates in which show the influence of Doré.
His paintings included: