The current study examined the intergenerational similarity of middle adolescents' and emerging adults' social value orientations (SVO) using different variable-centered and person-centered approaches and whether perceived parental autonomy support and conditional regard would play a role in similarity. The sample consisted of 218 middle adolescents (ages 14-15, eighth and ninth grades) and 219 emerging adults (ages 19-25, attending university) and their mothers and fathers in a metropolitan area of Ankara, Turkey (N = 437 triads). Our findings revealed that mother-father similarity was higher than parent-child similarity. Results indicated more similarities between emerging adults-parents than adolescents-parents, and autonomy support contributed to the similarity. Higher levels of maternal and paternal SVO has linked with prosociality of offsprings. Besides, when mothers and fathers were incongruent in reporting SVO, the emerging adults' probability of having prosocial SVO was lower.