Spiridon Gopčević, nom de plume Leo Brenner (Serbian Cyrillic: Спиридон Гопчевић; July 9, 1855–1928) was a Serbian-Austrian astronomer and historian born in Trieste.
His father, also named Spiridon, was a great shipowner in Trieste, then Austrian Littoral (modern Italy), but had originated from the village of Podi near Herceg Novi, in Boka Kotorska (modern Montenegro), then a part of the Austrian Empire. After the death of his father, when Spiridon was a boy, he was sent to Vienna to be educated. He attended the Theresianum (1861-1865) and Stiftsgymnasium Melk (1865-1869) at Melk in Austria. Following the death of his mother, he became a journalist by trade. He regarded himself first and foremost as a Serb, and that drove him to participate in the 1875 uprising in Herzegovina, and the following year to witness the Montenegrin-Ottoman War (1876-78), and participate in an insurrection in 1882 against the Habsburgs in southern Dalmatia, where he was arrested with Arthur Evans, who was a reporter for the Manchester Guardian at the time. Gopčević worked in these years as a war correspondent in the Balkans, and also travelled to Siberia, North America, North Africa and the Middle East. He even had a chance in London to meet William Gladstone in 1879. Gopčević entered the Serbian foreign service and served as diplomatic attaché in Berlin (1886-1887) and Vienna (1887-1890). In 1891 he went back to his family estate in Trieste, where he continued to write as a journalist for several German-language newspapers.