Technical Efficiency Analysis and The Determinants of Inefficiency Factors of Beef Cattle Fattening in Gorontalo District. Beef cattle farming in Gorontalo Province generally is managed by household farmers. However, smallholder cattle operations have several problems like low productivity, small bussiness scale and traditional management. The objectives of this study are to estimate level of technical efficiency of beef cattle production and to assess the effect of socio-economic factors on the technical efficiency. Thirty respondents in Tolangohula Sub district, Gorontalo District, Gorontalo Province were selected by accidental sampling method and analyzed using stochastic frontier production function. Results of the analysis showed that the beef cattle farming was feasible but the level of technical efficiency was low with an average efficiency index of 0.690. There were chances to increase in efficiency by 31%. Factors that affected the production of beef cattle were labors, forages and feeder cattleweight while the inefficiency was determined by the ownership status of the beef cattle and the intensity of the extension. Therefore, an access to resources such as technical training and access to an increased number of cattles through a capital increase needed to be developed.