In recent years, antitransgender legislation that focuses on gender and the use of public restrooms—so-called bathroom bills—has been considered in many states in the United States. The present study was designed to extend research on transphobic attitudes and elucidate links between religious fundamentalism, social dominance orientation, transphobia, and voting for bathroom bills. Further, we examined the moderating influence of critical consciousness on the relationship between transphobic attitudes and voting on a hypothetical bathroom bill. Results of a moderated mediation multinomial logistic regression path analysis using data from a sample of 282 college students (154 women and 128 men) indicated that religious fundamentalism and social dominance orientation were associated with transphobic attitudes. Transphobia was associated with lower likelihood to vote against or abstain from voting on the bill, compared to voting for it. Critical consciousness was also associated with greater likelihood of voting against the bill rather than for it. The interaction between transphobia and critical consciousness was associated with voting against rather than for the bill, such that at higher levels of transphobia, those higher in critical consciousness were more likely to vote against the bill rather than for it. Implications for incorporating critical consciousness into advocacy efforts to promote transgender rights are discussed.