Arthur Piaget (25 November 1865, in Yverdon – 15 April 1952, in Neuchâtel) was a Swiss historian, archivist and Romance philologist. He was the father of psychologist Jean Piaget.
In 1888 he received his PhD from the University of Geneva, and in 1890 obtained his degree for history and philology at the École pratique des hautes études in Paris. During his stay in Paris, he was influenced by the teachings of Gaston Paris and Gabriel Monod. From 1894 to 1938 he was a professor of Romance languages and literature at the Academy of Neuchâtel (since 1909 known as the University of Neuchâtel). In 1909–11 he served as university rector.
In 1898 he founded the Seminar for Reformation History at the faculty of theology at Neuchâtel. From 1898 to 1935 he served as cantonal archivist. For many years, he was editor of the journal "Musée neuchâtelois" (1902–49).
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