A review of group literature, much of which is anecdotal or theoretical, revealed that coleadership has been a common practice in training and therapeutic settings for well over 50 years. Careful examination of group practice reveals a surprisingly small amount of empirical evidence to support what apparently is a widely practiced method for the training of group leaders. However, the anecdotal support of group coleader practice is impressive if not convincing. That scholarly work is summarized in this article, and research implications for coleader practice are discussed as they relate to counselor preparation.