Ravenhall, who has more than 25 years experience in the dairy industry, joins from Arla Milk Link and will take up the role at the beginning of April.
He was md of Milk Link’s cheese business and lead to its integration with Arla Foods after the merger last year.
Senior executive positions
He has previously held a number of senior executive positions with Milk Link and the Irish Dairy Board's UK subsidiary Adams Foods, where he was md for five years.
Ronald Kers, ceo of Müller UK & Ireland Group said: “It is important that we have the structure and management team in place to deliver our aspirations.
“We are pleased to welcome Carl at an exciting time for Müller Wiseman Dairies, the Müller UK & Ireland Group and the dairy industry as a whole.”