Clive Anthony Stace (born 1938) is a British botanist and botanical author. His academic career was based at the University of Leicester, where he held the post of Professor of Plant taxonomy. He is a past president of the Botanical Society of Britain and Ireland.
He has also been responsible for a number of notable publications relating to the vascular plant flora of Britain and Ireland:
He also wrote the student textbook Plant Taxonomy and Biosystematics.