Abstract: This chapter outlines classification systems for microaggressions and validated psychological measures of microaggressions and related constructs. Self-report measures for microaggressions vary in their applicability across specific racial and ethnic groups. Measures reviewed include the Racial Microaggressions Scale, Racial and Ethnic Microaggressions Scale, Ethnic Microaggressions Scale, LBGT People of Color Microaggressions Scale, Inventory of Microaggressions Against Black Individuals, Gendered Racial Microaggressions Scale for Asian American Women, Multiracial Microaggression Scale, and Racial Microaggressions in Counseling Scale. Another method of assessing microaggressions as well as racial trauma is through use of the UConn Racial/Ethnic Stress and Trauma Survey, which assesses for racial stress and trauma to guide clinicians in asking clients difficult questions about their experiences surrounding racism. The American Psychiatric Association’s Cultural Formulation Interview in the DSM-5 gathers information on the cultural definition of the problem, cultural perceptions of the cause of difficulties, context and available support, and cultural factors affecting coping and help seeking. There are other self-report measures of related cultural constructs, including the Trauma Symptoms of Discrimination Scale, Multigroup Ethnic Identity Measure, General Ethnic and Racial Discrimination Scale, Schedule of Racist Events, Everyday Discrimination Scale, Major Experiences of Discrimination Scale, Cross-Cultural Counseling Inventory–Revised, and Racial Microaggressions in Counseling Scale. Also described is a demographic form that can sensitively collect important information about a client’s diverse identities.