Abraham Ruchat (27 February 1680, in Vevey – 29 September 1750, in Lausanne) was a Swiss Protestant theologian and historian.
In 1721 he was appointed professor of rhetoric at the academy, where from 1733 up until his death, he taught classes in theology.
[1] In 1727–28 he published several volumes on the Swiss Reformation, titled Histoire de la Réformation de la Suisse — in 1835–38 the work was published in its entirety by Louis Vulliemin (7 volumes).
In 1714, under the pseudonym "Gottlieb Kypseler", he published a guide for foreigners, Les Délices de la Suisse ("The Delights of Switzerland"; 4 volumes).
[3] With Louis Bourguet, Charles Guillaume Loys de Bochat and Gabriel Cramer, he was editor of the journal Bibliothèque italique, ou, Histoire littéraire de l'Italie.