Come Out, Come Out, Whoever You Are examines the variety of ways various people and groups use the concept of coming out to resist stigma and mobilize for social change. It examines how American lesbians, gay, bisexual, transgender, queer (LGBTQ+) people have used the term in different ways over time. It also examines how four diverse U.S. social movements--the fat acceptance movement, undocumented immigrant youth movement, the plural-marriage family movement among Mormon fundamentalist polygamists, and the #MeToo movement--have employed the concept to advance their cause. It sheds light on these particular struggles, while illuminating broader questions regarding social change, cultural meaning, and collective mobilization.