Head nurses who are job crafters have greater work involvement, showed high levels organizational citizenship behavior, go an extra mile in their formal work, responsibilities and give their energy and time for their hospitals to succeed. This study: Aimed to determine the relation among job crafting, work involvement and organizational citizenship behavior among head nurses. Design: A descriptive correlation design was utilized in this study. Setting: This study was conducted at Zagazig university hospitals. Subjects: All head nurses working in all units at Zagazig university Hospitals (n=93). Tools of data collection: Three tools were used: job crafting scale, job involvement questionnaire and organizational citizenship behavior questionnaire. Results: Indicated that 83.3 % of head nurses had a high level of engagement in job crafting activities. As well, 84.90% of head nurses had a high level of work Involvement. Additionally, the majority of head nurses had a high level of organizational citizenship behavior (91.40%) Conclusion: job crafting was positively and significantly correlated to work involvement and organizational citizenship behavior. As well, there was positive and significant correlation between head nurses' work involvement and their organizational citizenship behavior. Furthermore, work involvement is a strong positive predictor of job crafting. Recommendations: Organization should apply continuous awareness workshop for nurse managers regarding job crafting in different work settings among different managerial positions. Additionally, reward system should be introduced to the head nurses who demonstrate organizational citizenship behaviors.