The aim of this study was to determine the possibility of predicting adolescent social anxiety based on the gender and age of participants, dimensions of attachment (insecurity in binding, discomfort, relationships as secondary, trust and preoccupation with relationships) and dimensions of parental behavior (support, restrictive control and indulgence). Also, the gender difference in the severity of social anxiety was tested. The research was conducted with 414 male and female students of secondary schools ( 70.5% of female students) aged from 14 to 19 years (M = 16.35; SD = 1.074). The Parental Behavior Questionnaire (Keresteš et al., 2008), the croatian version of Social Anxiety Scale for Adolescents (La Greca and Lopez, 1998) and the croatian version of Attachment Style Questionnaire (Feeney et al., 1994),were used. The results showed that adolescent girls are significantly more socially anxious than adolescent boys, but significant age effect was not found. Adolescents of both gender rated mothers higher on dimension of support and restricitive control than fathers. Dimensions of attachment and dimensions of parental behavior (insecurity in binding, relationships as secondary, trust, preoccupation with relationships, mother support, mother restrictive control and father restrictive control) are significant predictors of social anxiety. Uncertainty in binding is its strongest positive predictor, while trust is the strongest negative predictor.