Hermann Winnefeld (4 September 1862, Überlingen – 30 April 1918, Berlin) was a German classical archaeologist.
He studied classics in Heidelberg and Bonn from 1881 to 1884, and subsequently became a research assistant at the Großherzogliche Vereinigte Sammlungen in Karlsruhe.
In 1887 he received his doctorate from the University of Bonn with the thesis "Sortes Sangallenses ineditae".
[1] In 1890 he started work as an assistant at the Berlin Museum, and several years later became an associate professor at the University of Münster (1895).
His main works include a monograph on Hadrian's villa near Tivoli (1895) and a description of the Pergamon Altar frieze.