This study examined the association between parents' alcoholism and peer bullying and victimization in middle childhood in 162 community-recruited families (80 girls and 82 boys) with and without alcohol problems. Toddler-mother attachment was assessed at 18 months of child age, and child reports of peer bullying and victimization were obtained in 4th grade. There was a direct association between fathers' alcohol symptoms and bullying of peers, as well as indirect association via toddler-mother attachment security. Multiple group models indicated that the direct association between parents' alcohol symptoms and bullying was significant for boys but not girls. The association between maternal alcohol symptoms and bullying was significant for secure but not insecure boys or secure/insecure girls. The association between fathers' alcohol symptoms and bullying was significant for insecure boys but not secure boys or secure/insecure girls. (Contains 1 table and 2 figures.)