Eugène Ruffy (2 August 1854 in Lutry – 25 October 1919) was a Swiss politician.

He was elected to the Swiss Federal Council on 14 December 1893 and resigned on 31 October 1899. He was affiliated with the Free Democratic Party of Switzerland.

During his time in office he headed the following departments:

• Department of Justice and Police (1894)
• Department of Home Affairs (1895)
• Department of Justice and Police (1895)
• Department of Home Affairs (1896–1897)
• Political Department (1898)
• Military Department (1899)

He was President of the Confederation in 1898.

His father, Victor Ruffy (1823–1869), was a member of the Federal Council in 1868/1869. The younger Ruffy was the only person to succeed his father as a member of the council until the election of Eveline Widmer-Schlumpf in 2007.

• Profile of Eugène Ruffy with election results on the website of the Swiss Federal Council.