Importance of different criteria and age preference in spouse selection for single and married young Iranian adults was examined. The sample included 104 married (49 male, 55 female) and 112 single (51 male, 61 female) students. A 26-item scale developed for this study included 4 items related to demographic factors, 3 items on preferences for the ideal age of marriage, and 19 Likert-type items asking about criteria important for spouse selection. Analysis indicated that, in Iran, commitment, chastity, refinement, and health are four important criteria for spouse selection among male and female and single and married persons. Also, experience of marriage for married males may increase maturity, social prestige, family background, having a job, and age as criteria for choosing a spouse. On the other hand, marriage experience for females may decrease the importance of social skills, housekeeping, and autonomy for selecting a spouse.