Background & Objective: Nurses form the most significant sector of the health care provision and play a fundamental role in providing on-going quality care for patients. To attain Clinical Competency, it is essential to understand the factors influencing it. Due to the fact that Clinical Competency is directly affected by specific features of the educational and health care system and the medical training within each country, it is necessary to assess the factors influencing Clinical Competency.
Materials & Methods: This study was based on the Grounded Theory method. The sample of 36 comprised of Clinical nurses, as well as trainers and managers within the Ministry of Health and Medical Training, Nursing and Midwifery faculties, hospitals and members of the Nursing Council in Tehran. Data was obtained through semi-structured interviews, which were recorded and subsequently transcribed. The analysis was carried out by the Straus and Corbin method.Results: In this study, personal factors were identified as one of the contextual factors affecting Clinical Competency. The respondents branded this category as "the internal and personal factors". This included a significant number of sub-categories such as education and skill, moral values, consciousness responsibility and accountability. Another category was identified as "the external and organizational factors" which included categories such as educational and Clinical environments, work license, control and supervision and effective educational system.Conclusion: The Clinical Competency process resulted from the interaction between three factors; ethics, effective experience and environmental factors.