Vinke ran both the European select values and the Continental select values funds.
He will be replaced by Robbie Wouters who has been co-manager on the funds for the past five years.
JOHCM chief executive Nichola Pease says: “After 6 successful years with JOHCM, managing European Equity strategies, Willem has decided to take a career break and to return to his native country the Netherlands. We are sad to see Willem leave and thank him for many years of valuable contributions to his clients and the firm. We wish him well in his new ventures.”