The present study has been conducted to evaluate the factors, limiting wheat yield in Kalaleh County via Comparative Performance Analysis (CPA) Method during 2015-16. The required information has been collected through fieldwork, along with personal interviews with the farmers. As a result, sixty wheat fields are selected in dry land areas of Kalaleh so that sufficient diversity could be maintained for all crop management, planting, crop protection, and harvesting areas. The amount of grain delivered to the wheat shopping centers has been recorded after determining the amount of drop as the final yield of the farm. Results from the yield model show that there has been a difference of 4071. 7 kg between attainable (7248 kg/ha) and actual yield (377. 4 kg/ha). Among the studied variables, the farmer experience, seeding rate, the amount of phosphorus in the soil, frequency of fungicide use, organic matter of the soil, amount of potassium absorbed in the soil, and the amount of applied nitrogen have influenced the wheat yield gap of the study area the most. These have been 19. 4%, 16. 8%, 14. 9%, 14. 3%, 12. 7%, 11. 7%, and 10. 3% of the achievable yield, respectivelt. By amending these factors, it seems that it could reduce the difference between the achievable and the actual yield.