The White Barramundi (Lates calcarifer, Bloch) is a fish that has high economic value. The problem in the cultivation of white barramundi is the length of time for raising and feed utilization that is not optimal. Turmeric contains curcumin and essential oils that can stimulate the performance of digestive enzymes and have a function for the absorption process of food substances to increases. The research objective was to determine the effect of the addition of turmeric extract on the growth and efficiency of feed utilization of white barramundi. The research started from 13 June -27 July 2020, at the Coastal Aquaculture Fisheries Center (BPBPP), Sekotong, West Lombok. The research designed by a completely randomized design (RAL) consisting of 4 treatments 3 repetitions. Treatment A with a dose of 0%, treatment B with a dose of 0,10%, treatment C with a dose of 0,15%, and treatment D with a dose of 0,20%. The data obtained were analyzed using ANOVA at the 95% confidence level, and further tested by Tukey. The parameters observed included absolute growth, SGR, EPP, FCR, and water quality. The results showed that the addition of turmeric extract had a significant effect on absolute growth, SGR, EPP, and FCR. The best dose is the addition of 20 ml of turmeric extract which can provide an optimum growth effect on white barramundi (Lates calcarifer, Bloch).