Despite interest in the importance of social equity to sustainability, there is concern that equity is often left behind in practice relative to environmental and economic imperatives. We analyze recent climate and sustainability action plans from a sample of twenty-eight medium and large U.S. cities, finding that few made social equity a prominent goal of their plans, although there is a discernible trend in this direction. We present case studies of three cities that incorporated social equity goals, concluding that sustainability planning efforts provide strategic opportunities to pursue equity goals, especially where capacity exists among community-based actors to intervene and participate.