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Fibularis tertius is a muscle of anterior compartment of leg, often considered as a part of extensor digitorum longus. This muscle contributes to dorsiflexion and eversion of foot. Existence of this muscle in many primates and in humans is still a topic of discussion. Previous reports show many variations on its existence. During routine dissection in the Department of Anatomy we came across an incidental finding of absence of fibularis tertius unilaterally. Clinical importance and functional significance of absence of fibularis tertius is discussed herein.