Antoine Louis John Ruchonnet (28 April 1834, in Lausanne – 14 September 1893, in Bern) was a 19th-century Swiss attorney and politician.

He was elected again as Federal Counsellor on 3 March 1881[2] and this time accepted the position and died still in office on 14 September 1893.

He was a unifying figure, along with his successor as Federal Counsellor for Vaud, Eugène Ruffy, in the Free Democratic Party of Switzerland.

[1] During his time in office he was responsible for the following federal administrative departments: Ruchonnet was elected to serve as the first Master of Liberty Masonic Lodge (French: Loge Maçonnique Liberté à l'Orient de Lausanne) in Lausanne when it was chartered on 11 September 1871.

There is also an 1888 portrait of him by Adolfo Müller-Ury (1862-1947) in the Musee des Beaux-Arts in Lausanne, gifted by his son Ernest in 1894.