Psychosocial late effects among survivors of pediatric brain tumors are common. For school-aged survivors, social skills deficits and isolation present a particular challenge. Social problem-solving is a social skill that is an important determinant of social outcomes and may yield a potential target for intervention. School-aged youth (N = 65) 8-12 years of age (10.59 ± 1.36 years; 55.4% female, 86.2% white) who were 5.23 (SD = 2.44, range 2-10.9) years post-treatment for a brain tumor completed the Attributions and Coping Questionnaire, a measure of social problem-solving that uses vignettes to assess attribution of intent, subsequent emotional response, and imagined behavioral response to an interpersonal problem. Youth also completed self-reports of social functioning (PROMIS Peer Relationships, Self-Perception Profile). A caregiver completed additional measures of child social functioning (NIH Toolbox-Emotion Measures). Survivors attributed unpleasant situations to accidental causes (neutral attribution) and responded in ways that prioritized the friendship (appeasement) or relied on adult intervention. Self-reported social functioning was higher among those who were less likely to avoid challenging social problem-solving situations. Findings identified characteristic social problem-solving approaches among survivors, including a tendency to attribute ambiguous situations to accidental causes and to request adult assistance and/or maintain social relationships. This may indicate a possible avenue for intervention, with a focus on increasing survivors' understanding of the causes of potentially negative peer interactions and reducing their reliance on adults.