Introduction: Nursing profession faces a shortage of human resources due to increasing demand for health services. However hard working and some special problems in nursing increased intention to leave in nursing. Therefore, one of the most important challenges in the healthcare system is having employees with a strong commitment to the organization. This research conducted to determine organizational commitment and related factors among novice nurses. Methods: This was an analytical, descriptive, cross-sectional study conducted on March to May 2018. Research samples consisted of 600 novice nurses who were selected through quota consensus sampling from 26 hospitals affiliated to Guilan University of Medical Sciences. Data were collected using tools including personal work-related characteristics, the workplace incivility (Cortina, 2001), the workplace bullying behaviors (Escartí n, 2010), the negative affectivity (Price, 2001), the positive affectivity (Price, 2001), the promotional chance (Price, 2001) and the organizational commitment (Price, 2001) that were completed by novice nurses. Data analysis was carried out using Spearman’ s rho, Mann-Whitney, KruskalWallis, and Stepwise (LR) multiple logistic regression. Results: The mean score of organizational commitment was 3. 14 ± 0. 66 (range: 1-5). The results of linear regression indicated that workplace incivility (OR= 0. 70, C. I. 95%= 0. 55-0. 89, P= 0. 004), negative affectivity (OR= 0. 75, C. I. 95%= 0. 59-0. 97, P= 0. 030), positive affectivity (OR = 1. 33, C. I. 95% = 1. 01-1. 74, P= 0. 038), promotional chance (OR = 3. 41, C. I. 95% = 2. 33-5. 00, P˂ 0. 001), satisfaction with the salary (OR = 2. 65, C. I. 95% = 1. 62-4. 31, P˂ 0. 001) and interest in the nursing profession (OR= 2. 19, C. I. 95%= 1. 32-3. 62, P= 0. 002) could significantly predict nurse’ s organizational commitment. Conclusions: According to the results of this study, nursing managers can increase organizational commitment in novice nurses by increasing their chances of promotion, improving nurse’ s affections, eliminating mistreatments and increasing nurses' salaries.