Purpose: The purpose of this study was to explore factors which contribute to suicidal ideation in people with schizophrenia who have experienced at least one suicide attempts. Methods: The participants for this study were 138 people with schizophrenia who had made attempts at suicide. Data were collected from April 15 to May 7, 2014 using self-report questionnaires which included questions on Suicidal Ideation, Self-Esteem, Depression, Family Support and the Internalized Stigma Inventory. Data were analyzed using t-test, ANOVA, Pearson correlation coefficients, and hierarchical regression with the SPSS/WIN 18.0 program. Results: The average score of suicidal ideation in the patients with schizophrenia who had experienced suicide attempts was 12.2±6.08. Factors which predicted suicidal ideation in these patients included self-esteem, depression and suicide attempts and these factors explained 44.0% of the variance in suicidal ideation. Conclusion: The results indicate that development and application of intervention programs, which can help to increase self-esteem levels and decrease depression levels among patients schizophrenia that have experienced suicidal attempts is a first priority.