Iranian Journal of Nursing and Midwifery Research1735-906617720130116796796ENPh.D department, School of nursing and midwifery, Tehran University of Medical Sciences, Tehran, IranNursing and Midwifery Care Research Center, School of nursing and midwifery, Tehran University of Medical Sciences, Tehran, IranNursing Department, Tarbiat Modares University, Tehran, Iran20130116<p><strong>Background</strong>: Nursing education is both formal and informal. Formal education represents only a small part of all the learning involved; and many students learn more effectively through informal processes. There is little information about nursing student informal education and how it affects their character and practice.</p> <p><strong>Materials and Methods</strong>: This qualitative study explores undergraduate nursing student perceptions of informal learning during nursing studies. Data were gathered through semi-structured interviews with a sample of undergraduate nursing students (n = 14). Strauss and Corbin&rsquo;s constant comparison analysis approach was used for data analysis.</p> <p><strong>Results</strong>: The categories that emerged included personal maturity and emotional development, social development, closeness to God, alterations in value systems, and ethical and professional commitment.</p> <p><strong>Conclusion</strong>: Findings reveal that nursing education could take advantage of informal learning opportunities to develop students' nontechnical skills and produce more competent students. Implications for nursing education are discussed.</p> <strong>KEY WORDS:</strong> Informal learning, personal growth, qualitative study, undergraduate nursing educationhttp://ijnmr.mui.ac.ir/index.php/ijnmr/article/view/796http://ijnmr.mui.ac.ir/index.php/ijnmr/article/download/796/589