Professional ethics compel social workers to address all forms of discrimination and oppression. Microaggressions can contribute to health disparities for marginalized groups; yet, little is known about the frequency, mechanisms, and impact of microaggressions on sexual minorities, cisgender women, and gender minorities—particularly for those with intersecting marginalized identities. This article extends microaggression literature by exploring interrelated constructs of sexual orientation, gender, and gender identity microaggressions, and offering recommendations for future research using an intersectional lens to foster an integrated and complex understanding of microaggressions. Implications of an intersectional microaggression framework for social work education and practice are discussed.