Objectives: Civic action describes participation in political and prosocial activities aimed at benefiting one's communities. A growing literature rooted in critical consciousness (CC) theory suggests that engaging in critical action, which challenges societal inequities, is important for the positive development of youth of color. Although valuable, existing literatures have yet to consider how psychological processes related to the immigrant experience, such as immigrant optimism (IO), may differentially influence the civic participation of immigrant youth of color. IO is a phenomenon in which immigrant groups hold higher aspirations and more positive views of the host society than their nonimmigrant peers, and this often is associated with positive outcomes. This article reviews and integrates relevant research on the civic development of immigrant youth of color, considering both how IO may be a particularly relevant process in shaping immigrant youths' CC development and how civic action may take different forms among these youth. Method: We define concepts, integrate previously siloed literatures, and make recommendations for future research. Results: We propose expanding existing frameworks to consider IO and forms of action, along with their intended outcome. Conclusions: Incorporating IO into studies of CC or civic development can clarify important differences and enhance our understanding of how best to support immigrant youth. Similarly, examining forms of action and their intended outcome may be advantageous in facilitating young immigrants' development as active and engaged members of society. Public Significance StatementThis integrative review and synthesis highlight evidence for the immigrant optimism (IO) hypothesis as a relevant but underexamined process in existing frameworks of critical consciousness and civic development. Examining IO as an antecedent to action can improve our understanding of the civic development of immigrant youth of color, whose experiences have too often been neglected. We also describe a need to consider the various forms of action in which these youth engage and the intentions youth have for engaging in these actions, which may allow researchers to draw meaningful distinctions in civic action among immigrant youth of color.