Children with fetal alcohol spectrum disorders (FASDs) evidence an array of structural brain abnormalities and neurocognitive deficits. Furthermore, previous research suggests that deficits in executive functioning (EF) may be associated with significant difficulties in the formation of positive peer relationships in this population. The purpose of the current study was to examine the role of EF as a predictor of treatment response to a controlled social skills intervention for children with FASDs. A total of 100 children between the ages of 6 and 12 received Children's Friendship Training (CFT). Prior to treatment, parents completed the Behavior Rating Inventory of Executive Functioning (BRIEF). Treatment outcome was measured using parent report on the Social Skills Rating System (SSRS). The results demonstrated that behavioral regulation as measured on the BRIEF predicted the effectiveness of CFT for children with FASDs, regardless of general intellectual functioning. Specifically, the ability to control impulses, solve problems flexibly, and monitor emotional responses significantly predicted improvement in social skills and reduction in problem behaviors following CFT.