The aim of this research is to measure and evaluate service quality of the agricultural extension centers in Assiut governorate using SERVPERF scale and its weighted version (importance-weighted SERVPERF). The study was conducted on 119 farmers distributed equally on the 17 extension centers of Assiut governorate. The results showed that although the respondents' overall view of the performance of service quality dimensions is high, the perceptions in all quality dimensions did not meet its maximum scores. This means that farmers seek more from extension centers than the extension centers actually offer. Therefore, these extension centers need to make improvements in all dimensions to close the gaps that could lead to increase farmers' satisfaction.