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Background and Objective: The incidence rate of elderly misbehavior increased in the past two decades. This study was conducted to determine the prevalence of elderly misbehavior in northern Iran. Method: This descriptive - analytic study was done on 247 more than 60 years old (137 males, 110 females) in north of Iran during 2012. In order to determine misbehavior, an elderly questionnaire was filled for each subject. Results: The mean age of subjects was 68.8±7.08 years. The prevalence of lack of attention, care, financial, authentic was 34.8%, 33.6%, 29.1% and 22.3%, respectively. The prevalence of psychological, physical, isolation and financial misbehavior were 26.7%, 26.7%, 2.6% and 21.9%, respectively. There was a significant relationship between income and marital status with misbehavior maner (P<0.05). Conclusion: Elderly misbehavior particularly lack of attention and care are more perevlant in northern Iran.