Tibicos or water kefir is a traditional drink. It is slightly sweet, acidic, fruity, sparkling fermented beverage produced with water kefir grains, and the latter consisting of polysaccharide and micro organisms, made of water and symbiotic cultures of bacteria and yeast (SCOBY) held in polysaccharide biofilm matrix created by the bacteria. The present study was aimed to study the antioxidant properties of fermented coconut water kefir. water kefir was fermented in tender coconut water for 48 hours, colony forming unit, antioxidant content by DPPH assay, alcohol content using density meter were estimated. Sensory evaluation of the developed product was conducted by 20 panelists. Results showed 6 × 107 CFU of micro organisms were present in the sample, water kefir have high antioxidant activity, IC50’s of the sample showed 10000 for 625 µg/ ml. Alcohol content was 0.0633 / 100 ml. It has many health benefits , it is dairy free can be used in lactose intolerance, boosts gut health, promotes immune functions, helps fight cancer, it has antihyperglycemic and antihyperlipidemic properties. Thus, it was concluded that fermented coconut water kefir had high antioxidant content.