Introduction: Academic achievement always depends on the proper functioning of the physical, psychological and functional aspects of the individual, so this study investigated the relationship between academic procrastination, locus of control and achievement motivation with academic achievement in nursing student. Methods: The research method was descriptive-correlational and in particular, Structural Equation Modeling. The population of the study consisted of students of Babol University of Medical Sciences in 2018, in which 494 people (253 girls and 255 boys) were selected as a statistical sample and with simple random sampling. Herman’ s achievement motivation inventory (1970), Solomon & Rohblum Academic Procrastination Scale (1984) and Rotter’ s Locus of Control Scale (1966) were evaluated. Grade Point Average (GPA) was as academic achievement. In this study, in order to analyze the obtained data in the descriptive statistics of mean and standard deviation and in inferential statistics of Pearson correlation test and maximum likelihood estimation and Bootstrap in the modeling of structural regression equations was used. To analyze the data, SPSS 18 and Amos 23software were used. Results: The mean and standard deviation in descriptive statistics showed that academic procrastination (65. 47 ± 7. 06), locus of control (12. 37 ± 3. 75), achievement motivation (80. 23 ± 7. 94) and academic achievement (16. 60 ± 1. 62). In the inferential statistics, the results showed that there is a significant positive relationship between achievement motivation and locus of control with academic achievement and there is a significant negative relationship between academic procrastination and academic achievement (P≤ 0. 01). The research model was confirmed and in general, 0. 38 of academic achievement can be explained by achievement motivation, academic procrastination and locus of control. Also the achievement motivation is a mediator role in the relationship between academic procrastination and locus of control with academic. Conclusions: In general, there is a relationship between academic procrastination, locus of control and achievement motivation with academic achievement in nursing student. Therefore, with decrease of academic procrastination and increase locus of control can increase achievement motivation in students and, ultimately improve academic achievement.