Background: Many of professional leagues have established ethical regulations for guidance of their members, associations, professional organizations and also for retaining the public confidence.  These regulations are related to ethical subjects and factors (codes) and are the formal statement of ethical values considering the ethical behaviors. Likewise, librarians need to such a regulation. To satisfy the need, many Library and Information Sciences (LIS) professional associations in various countries have built their own ethical regulations. Current study deals with identification and determination of the relative importance of ethical factors through LIS profession. Furthermore, the study investigates to the LIS students’ knowledge of ethical factors.
Methods: Basically, the study is a survey which uses an author-made questionnaire for collecting the data. The questionnaire is built upon a thorough review of related literature and is composed of two sections. The first one is related to demographic factors and work experience in addition to the samples’ familiarity with ethical factors. The second is comprised of 14 questions about the ethical factors. The questionnaire is formulated into a 5-point scale set. The population includes all Tehran universities’ LIS undergraduate students. Using random sampling method, 137 students were selected from Tehran, Tarbiat Moallem, Alzahra, Shahed and Allameh Tabatabaei universities. The gathered data were analyzed using various statistical tests.
Conclusion: It was revealed that 36.5% of students had sufficient familiarity with ethical factors. Familiarity of 63.5% was moderate, low, or null. Used statistical tests showed that the sex and the students’ occupational status had no impact on their attitude toward the importance of ethical factors. For the relative importance of ethical factors, the results showed that there is significant difference among the attitudes of students in various levels and also among students of different universities.