This research mainly aimed to determine Affecting Factors the organizational coordination of agricultural extension at Damietta governorate. Therefore, a simple random sample consisting of 80 respondents was selected from the total agricultural cooperative societies, this is in addition to all the five agricultural extension centers in the governorate. The research sample is 85 agricultural extension organizations. Data Collected using the questionnaire by the personal interviews for the mangers of agricultural cooperative societies and extension centers. Some statistical techniques such as: percentage, mean, standard deviation, simple & multiple correlation coefficients, partial & multiple regression coefficients, Step-wise, used to analysis of the data by SPSS program, version 19.    The main findings of this research revealed that: - About 79% of the organizations of agricultural extension ranged between low and medium level of vertical coordination, and about 87% of these organizations ranged between low and medium level of horizontal coordination, and about 94% of these organizations ranged between the degree of interactions between them and other social organizations between Low and medium, and about 85% of these organizations have the degree of total organizational coordination ranging between low and medium. - There was opposite significant relationship between qualification, specialization, Human possibilities, Decentralization, mentoring training, clarity of role, morale and formalism, cooperative awareness, functional immersion, clarity of work rules, material capabilities, and the trend towards organizational coordination, And the degree of total organizational coordination of the agricultural extension organization as a dependent variable. - That the independent variables studied together explain 69.8% of the variance in the degree of total organizational coordination of the agricultural extension organization, and that the most contributing factors are: morale, Human possibilities, specialization, functional engrossing, clarity of role, and the trend towards organizational coordination and extension training.