Oranges and mandarins are classified as important citrus in Egypt. The study usesa stochastic frontier production function to measure the efficiency of production for oranges and mandarins in Egypt during 1997-2019. During the time period 1997-2019, the mean of oranges production is 2317.69 thousand ton, while the mean of mandarins production is 753.53 thousand ton. The minimum value of oranges production is 1441.652 thousand ton and for mandarins production is 421.811 thousand ton (1998), while the maximum value of oranges production is 3351.307 thousand ton and for mandarins production is 985.439 thousand ton (2015). In 2019, Noubaria governorate has the highest production of oranges and Mandarins, while Fayoum governorate has the lowest production of oranges, and Dakahlia governorate has the lowest production of Mandarins. The results of the study indicate that the efficiency for oranges and mandarins production make clear improving over time. The study recommends that the government should encourage and motivate farmers in different governorates to produce the most efficient crops in their governorates.