Purpose: The aim of this study was to design a structural 
model for predicting marital adjustment based on 
religious orientation mediated by lifestyle.
Materials and Methods: The research method was 
descriptive-correlation. The statistical population 
included all married clients to counseling centers in 
Tehran in the first half of 1400. By the rule of 10 people 
for each measured variable, the sample size was 
determined to be 250 people and multi-stage cluster 
sampling was selected using random sampling method.
Modified paired adjustment questionnaire, religious 
orientation questionnaire and LSQ lifestyle questionnaire 
were used to collect data. Data analysis was performed 
through descriptive statistics and structural equation 
modeling with the help of SPSS27 and AMOS24 statistical 
software at a significance level of 0.05.
Findings: The results showed that the research model fits 
with the collected data. The result of modeling structural 
equations with the presence of mediating variables 
showed that there is a positive and significant relationship 
between internal religious orientation and lifestyle. There 
is a negative and significant relationship between external 
religious orientation and marital adjustment. Finally, the 
results showed that lifestyle plays a mediating role 
between inner orientation and marital adjustment.
Conclusion: Religious orientation is one of the effective 
factors in marital adjustment and lifestyle affects the 
effect of this factor on marital adjustment. Therefore, in 
order to increase marital adjustment, it is necessary to pay 
attention to the role of mediating variables such as 
lifestyle.