Uwe Sommer will become group chief executive from May 1
Chief executive Ronald Kers is to step down from his role at Muller and will be replaced by head of international marketing, sales and global retail at chocolate manufacturer Lindt and Sprungli Uwe Sommer.
Mr Sommer will join the group as chief executive from May 1.
Mr Kers joined Muller in 2012 as head of Muller in UK and Ireland before becoming group chief executive in 2015.
Mr Sommer announced last year he would resign from group management at the end of April 2017 as part of a board restructuring.
Muller has not commented on an official reason for the management change but reports have suggested it is due to Mr Kers not wanting to relocate fully from the UK to Luxembourg.
Initial reports in Germany suggested Mr Kers would return to the UK as the head of Muller UK and Ireland but the current management team in the UK will remain the same.
Mr Kers will remain at Muller to help transition Mr Sommer into his role before leaving the company.