Women and racial minorities are underrepresented in science, technology, engineering, and math (STEM) fields. This review describes six “wise” psychological interventions that can improve gender and race equality in STEM education by addressing psychological processes that inhibit achievement. The interventions are brief, low cost, and effective because they target specific psychological processes that cause disinterest, disengagement, and poor performance in STEM education. Interventions promoting a growth mindset address needs for competence and confidence. Communal goal interventions portray STEM as fulfilling communal values. Utility-value interventions highlight the usefulness and value of STEM education in students’ lives and careers. Values-affirmation interventions can buffer negative effects of social identity threat by reaffirming one’s personal values. Belonging interventions can bolster sense of belonging and identity in STEM by fostering a personal connection with the STEM community. Role models can instill a sense of belonging and identity compatibility in underrepresented groups in STEM. Educators, researchers, and policy makers can promote STEM education and careers by advocating for wise psychological interventions.