Asian Americans and Latinos living in the United States often emphasize solidarity at the panethnic level, insisting on their common goals. However, expressing panethnic solidarity is one thing, whereas conducting political actions out of psychological states is another. This study examines how panethnicity affects Asian American and Latino political participation. My analyses find that panethnicity, as one component of multidimensional group consciousness, significantly influences Asian American and Latino voting and nonvoting activities. However, how panethnicity affects political participation varies, depending on panethnic groups and their modes of political participation. Specifically, my evidence indicates that panethnicity significantly bolsters both Asian American and Latino nonvoting participation. In contrast, panethnicity significantly dampens Asian American voting participation but has no impact on Latino voting participation.