McKenzie is to pass over the management of his fund to Ross Watson from August 3. He will remain at the firm until the end of September following a transition period.
McKenzie joined Martin Currie in October 2005 from Morley Fund Management, where he had worked since 1999 as a UK equity fund manager.
Watson also manages the UK growth and income portfolios at Martin Currie as well as an equity income trust in the shape of the Securities Trust of Scotland.
The £21m UK equity income fund is currently fourth quartile in the IMA UK equity income sector over three years.