Title: Evaluation of Input Efficiency for Catfish Farms in the Mekong River Delta, Vietnam

This study has used minimizing input-oriented Constant Return to Scale (CRS) Data Envelopment Analysis (DEA) model with one output and seven input variables. The study’s purpose was to analyse technical efficiency to reduce input resource cost for catfish in Mekong River Delta, Viet Nam. The report is based on 61 samples from catfish farms with information gathered from farmers regarding production and usage of inputs. The minimizing input-oriented CRS DEA results indicate that there are 11 technically efficient catfish farms (18%) and 50 technically inefficient catfish farms (82%). The ratio of resource reduction of input variables varied from around 20% to nearly 60%. In future research, stochastic frontiers method should be used to compare results of DEA method and environmental variables should be included, for example, location and water quality.