The purpose of this study was to evaluate the feasibility, acceptability, and helpfulness of Mindfulness-Based Cognitive Therapy for Children (MBCT-C) for the treatment of internalizing and externalizing symptoms in a sample of nonreferred children. Twenty-five children, ages 9 to 12, participated in the 12-week intervention. Assessments were conducted at baseline and posttreatment. Open trial analyses found preliminary support for MBCT-C as helpful in reducing internalizing and externalizing symptoms within subjects on the parent report measure. The high attendance rate (Intent-to-Treat sample, 78%; Completer sample, 94%), high retention rate (68%), and positive ratings on program evaluations supported treatment feasibility and acceptability. Overall, this pilot study offers feasibility and acceptability data for MBCT-C as a potential treatment for internalizing and externalizing symptoms in children. Further research is needed to test the efficacy of the intervention with a larger sample of children who meet diagnostic criteria for clinical disorders.