Charles Marie Adolphe Louis Bayet (25 May 1849, Liège – 16 September 1918, Toulon) was a French historian, who was a specialist in Byzantine art.
From 1868 he studied at the École Normale Supérieure in Paris, then enlisted for military service during the Franco-Prussian War.
After spending time studying in Rome, he became a member of the French School at Athens (1873).
During the following year, with Louis Duchesne, he participated in a research expedition to Mount Athos.
[1][2] Despite being in his mid-60s, he volunteered for military duty at the outbreak of war in 1914 – he succumbed to illness while serving as a lieutenant at the Macedonian front and was compelled to return to France.