Introduction and goal of research: In today`s organizations, knowledge is considered as the most critical asset of an organization, and organizational learning (OL) is the main way to create knowledge-based activities. On the other hand, trust is viewed as the “air” and it becomes the focus of attention only when it isn\'t there. Without the full of trust atmosphere, the organization is heading toward destruction. Therefore the importance of paying attention to organizational learning and trust, are considered by many organizations and programmers in different countries, this study aims to study these two issues in order to find a relationship between them that is conducted in small manufacturing-industrial firms in Mashhad and Neyshabour. Methodology: In terms of research method, this study is a correlation one, statistical population and sample of this study is a number of employees and managers (including supervisors and middle managers) of small firms in Mashhad and Neyshabour that 90 people were selected using Morgan table and class sampling method proportional to volume. Findings: In the present study, a significant and positive association between two variables of study main hypothesis was confirmed. Also, the relationship between dimensions of organizational trust (OT) (Lateral, Vertical or Institution Trust) with the dimensions of organizational learning (Common Vision, Organizational Culture, Work and Group Learning, System Thinking, Participative Leadership, Knowledge Sharing, and Employee Competence) was confirmed. Conclusion: According to confirming research main hypothesis; increasing trust in organizational environment will lead to the expectation of higher levels of organizational learning.

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