Selection on Adult Weight of Sambar Deer (Rusa unicolor). Deer are animals that has potential as producers of meat, through the exploitation of captive deer. Morphometric information and selection to improve the performance of Sambar deer has been done in Technical Implementation Unit of Animal Breeding and Artificial Insemination Institute, Village Api-api, District of Penajam Paser Utara, East Kalimantan. A number of 174 heads from a total population of Sambar deer recorded body weight, body length, width and chest circumference, length and width of head, also length and width of the ear. Results of selection of female and male based on body weight, were 52 females (60%, the intensity of selection 1:40) and six males (10%, the intensity of selection 1.74). Differential selection on males and females were 18.42 kg and 7.73 kg, respectively. Prediction of selection response of Sambar deer was 7845 kg with heritability estimation value (h2) was 0.60.