Introduction: Organizational power is effective factor on nursing profession’ productivity, nurses’ practice and their job satisfaction. Nurses’ perception of power in nursing profession can facilitate them to achieve mentioned aims

 Aim: The aim was assessment of nurses’ perceptions of nursing power based on King Model.

 Method: A descriptive study was conducted in medical-surgical units in teaching hospitals in Tabriz 2012. The data were collected from165 nurses who selected randomly. For data gathering (SKAGPO: Sieleoff-King Assessment of Group Power within Organization) questionnaire was used and their points computed in 8 sub scales of it. Its reliability was 0.89 by using of test- retest and its’ validity was received by content validity. Data were analyzed by One-way ANOVA, t-test and by using software SPSS18.

 Results: The results showed that 77.94% of nurses had limited perception of organizational power in nursing profession. In subscales of power concept outcome attainment (mean= 3.93), and effectiveness of power (mean= 3.87) had a very high perception. But in resources of power (mean=1.78), effects of environmental forces (mean=2.15) and effectiveness communication (mean=2.11) had limited perception. There was significant correlation between nurses’ experience with environmental forces (p=0.002), role playing and supervision subscales (p=0.04). Also, there was significant correlation between nurses’ age with environmental forces and role subscales (p=0.007).

 Conclusion: By considering these findings, it is necessary to clarify the power concept and organizational processes by orientation programs, that nurses educated with nursing models. Also, change in managerial structure, applying suitable strategies and readiness for nurses’ autonomy in decision making in health care system are necessary to promote organizational power.