Civic engagement is recognized as a critical process to address environmental and other societal issues. To examine the intersection between environmental education and civic engagement, as reported in the peer-reviewed literature, we undertook a systematic mixed studies review to identify environmental education program outcomes related to civic engagement. The environmental education programs included in the final sample (n = 56) occurred in a range of settings, involved diverse audiences, and were generally longer than a month in duration. All 56 studies reported some level of positive findings, with 19 reporting civic-related outcomes at the community level, such as community learning, community resilience, partnership building, and increased social capital. Fifty studies reported civic-related outcomes at the individual level, with civic attitudes being the most frequent. Increased civic skills and civic knowledge were also commonly reported. Analysis revealed five themes related to environmental education practices and implementation that appear to support development of civic engagement: (1) focusing on the local community; (2) actively engaging learners through participatory and experiential approaches; (3) including action-taking as an integral part of the education program; (4) emphasizing development of lifelong cognitive skills; and (5) providing ongoing opportunities for participants to engage in meaningful social interaction.