The appointment of Andre Witschi follows the decision of Karl Schattmaier, the current general manager of hotels and resorts, to retire.
Schattmaier will hand over to Witschi in mid-July, but will continue to support Thomas Cook as a member of the supervisory board.
Fankhauser said: “André Witschi is one of the most experienced international hotel managers in the industry and will play a key part in setting the direction of our important hotels and resorts function, ahead of a permanent appointment to the role.