This study examined interest in and barriers to participation in a multiple family group intervention (MFG) for adult cancer survivors and their family caregivers. The intervention was developed to assist families in coping with the persistent challenges of cancer diagnosis, treatment, and rehabilitation. Eighty eligible families having a member diagnosed and treated for cancers of the head and neck region completed a baseline quality of life survey consisting of standardized psychosocial measures, and then all patients and their families were invited to participate in a day-long multiple family group program. However, despite extensive recruitment efforts and accommodations to address anticipated barriers for nonparticipation, only 15 of the 80 (19%) eligible families agreed to attend the MFG workshop. Post-MFG, participating families reported high levels of program satisfaction and usefulness. These findings are discussed in the context of increasing the use of family-focused interventions in cancer care settings.