Social capital is one of the important capabilities and properties of organization which could help it in knowledge share and creation and by providing proper field, would equip human resources to organizational entrepreneurship's knowledge and skill, and could be one of the effective alternatives in personnel performance promotion, so the main aim of this study was to examine the effect of social capital on organizational entrepreneurship in Babol's Education & Training Office. Social statistics were 780 persons of teachers of babol's guidance schools which 250 persons were selected as sample statistics by Morgan table. Designed questionnaire after confirming validity by experts and reliability by %88 alpha cronbakh were distributed. Results of regression tests indicated that there was a significant relationship between social capital and organizational entrepreneurship in Babol's Education & Training Office. Also there is a significant relationship between two dimensions of social capital such as the quality and structure of social capital and organizational entrepreneurship in Babol's Education & Training Office. The result of Spearman correlation tests also showed that there were significant relationships between trust and relations in quality of social capital and between variables in structure of social capital such as size and extension of relation network, relations structure and social solidarity with organizational entrepreneurship. Finally it was concluded that strong and rich structure of social capital could lead to reinforce organizational entrepreneurship in  Education & Training Office