The sponsorship function of mentoring has vast potential to increase career advancement for African American protégés in cross-race mentoring relationships but is not well understood. We conceptualize the processes, practices, and challenges involved in cross-race sponsorship of African American protégés through an identity perspective. We provide a theory regarding how identity processes are involved at different stages of cross-race sponsorship involving African American protégés, as well as for their mentors, by drawing on identity, diversity, and mentoring research. This work is suggestive of opportunities for improvement in the sponsorship function of mentoring in order to increase career advancement for African American protégés and provides theoretical contributions to research on identity, diversity, and career advancement.