The present study aimed to investigate the relationship between spiritual intelligence and mental models (schemas) among second-year high school students in Ardabil city in the academic year 1404-1405. The statistical population of this study included 2200 male and female students, of whom 375 were selected using a systematic and accessible sampling method. Of this sample, 180 were female and 195 were male. To measure spiritual intelligence, King's Spiritual Intelligence Questionnaire (2008) was used, and to assess mental models, Young's Maladaptive Schemas Questionnaire (1999) was used. The collected data were analyzed using appropriate statistical methods. The results of the study showed that there is a negative and significant relationship between spiritual intelligence and entitlement schema in both groups of girls and boys, meaning that students with higher levels of spiritual intelligence are less inclined to the entitlement schema. Also, spiritual intelligence did not show a significant relationship with other schemas, including self-awareness, personal meaning-making, transcendental awareness, existential thinking, emotional deprivation, abandonment, distrust, social isolation, imperfection and shame, failure, dependency-inadequacy, vulnerability, untransformed self, obedience, sacrifice, emotional inhibition, and rigid standards. These findings indicate that spiritual intelligence is specifically related to the entitlement schema and does not have a significant effect on other maladaptive mental patterns. The results of this study can be useful in designing educational programs and psychological interventions aimed at promoting mental health and strengthening spiritual intelligence in adolescents.