This paper depicts the fluoride occurring in the groundwater in many parts of the world is harmful for human health. The fluoride level must be maintained at certain limits. According to World Health Organization the permissible limit of fluoride concentration in drinking water is 1.5mg/L. The excess fluoride present in groundwater causes skeletal fluorosis, dental fluorosis, non-skeletal problems. This review paper presents the past work on defluoridation by using adsorption techniques. The adsorption procedure is broadly utilized in many countries like India, Sri Lanka, and China, Turkey etc. It is relative simple and cost effective method. The adsorption process using bio-adsorbents that is abundant, easily available have been investigated. The main purpose of this paper is to provide new ideas about the removal of fluoride in aqueous and synthetic solutions by adsorption technique that has been given by various researchers in the field of fluoride removal.