She will replace current CEO Christophe de Backer, who will step down on 31 January.
Chairman of the Swiss private bank and asset manager Benjamin de Rothschild said: “I have asked my wife Ariane de Rothschild to oversee our group as chairwoman of the executive committee. I am confident that she has all the personal and professional qualities to put in place the necessary changes to transform our group into an even more modern, dynamic and successful business – continuing our family tradition.”
The group’s board of directors unanimously supported the decision.
The company currently manages €133.6bn (£104bn) of assets.