• The Persian version of the MODDI-F has acceptable validity and reliability.
• A Cronbach’s alpha of higher than 0.70 were found for all of the subscales of MODDI-F, expect for the subscale of death denial.
• A significant relationship was found between the scores of the MODDI-F components and the scores of convergent and divergent factors in the EAS, OHQ, GHQ, and DAS questionnaires.

Plain Language Summary 
Many previous instruments about death were not based on true theory and well-explained conceptual assumptions. Besides, most of the existing instruments are only focused on anxiety related to death and dying. Few instruments are available to assess death acceptance, and none is appropriate for assessing the constructs of acceptance and fear of death in a multidimensional way. The Multidimensional Orientation Toward Dying and Death Inventory (MODDI-F) is the only instrument assessing death acceptance and death denial, along with death anxiety. The MODDI-F is based on the main assumption that people’ reactions toward dying can be divided into three dimensions of fear, acceptance, and denial. These dimensions are the most important ways of thinking and feeling about death. MODDI-F consists of 8 subscales of fear of one’s own dying, fear of one’s own death, fear of another person’s dying, fear of another person’s death, fear of corpses, acceptance of one’s own dying and death, acceptance of another person’s death, and denial of one’s own death. The present study aimed to examine the psychometric properties of the Persian version of the MODDI-F. Results showed the acceptable validity and reliability of its Persian version. A Cronbach’s alpha of higher than 0.70 were found for all of the subscales of MODDI-F, expect for the subscale of death denial. A significant relationship was found between the scores of the MODDI-F components and the scores of convergent and divergent factors in the EAS, OHQ, GHQ, and DAS questionnaires.