Background: Managerial intelligence has gained momentum where developing head nurses' competency as professionals, preventing nurses from departing their current positions and can impact on nurses thriving. Aim: To compare between Tanta Main University and EL-Salam Hospitals regarding the influence of the head nurses' managerial intelligence on intensive care nurses thriving and job embeddedness. Method: Descriptive correlational comparative study design was applied. Setting: The study was done in all ICUs in Tanta Main University and ELSalam Hospitals. Subjects: A convenience sample of intensive care nurses working in both studied hospitals. Study tools: Three tools were utilized to collect study data; (1): Head Nurse, Managerial Intelligence, (2): Nurses' Thriving Questionnaire, and (3) Job Embeddedness Questionnaire. Results: At El Salam Hospital around two-thirds of s nurses had high perception level regarding their head nurses' managerial intelligence, and more over a half of nurses experienced high perception level in Tanta Main University Hospital. At El Salam Hospital the majority of nurses also experienced had high level of work place thriving while, at Tanta Main University Hospital more than half of nurses had high level of thriving in work place. The highest percent of nurses had a high level of job embeddedness at El Salam and Tanta Main University Hospitals, respectively. Conclusion: it was concluded from the study statistically significant positive correlations between head nurse managerial intelligence, nurses, job embeddeness and nurses, thriving at work place at El-Salam and Tanta Main University hospitals. Recommendations: Periodic attendance of training programs to refresh head nurses, knowledge and skills related to managerial intelligenc