Sleep is increasingly important in public health because sleep problems are associated with multiple negative health and quality-of-life outcomes, especially among those with chronic conditions. While evidence-based self-management programs have been widely studied, little is known about their specific impacts on sleep. Using data from the National Study of Chronic Disease Self-Management Program (n = 1168), improvements in sleep problems were observed for all subgroups except men. More sleep problem reductions were observed among younger participants compared with their older counterparts. This study confirmed the value of self-management programs for ameliorating sleep problems across diverse participant groups.