Political actors and individuals who deny the reality of human-caused climate change are a minority with an outsized ability to shape domestic climate science, policy, and communications. This literature review traces the development of climate change denial from its beginnings in conservative organizations and the energy industry in the mid-20th century, and shows how the initial denialists’ work has been refined by contemporary actors to spread climate dis- and misinformation online. The essay examines the scholarly literature on the alignment of climate change denial with identity, showing how climate change denial has become woven into certain cultural, political, racial, and religious identities. It further traces the tactics for spreading climate change denial, like social media targeting and conspiracy theories designed to cast doubt on scientific findings. Finally, the essay explores scholars’ work examining ways to disrupt climate change denial, build support for scientific institutions, and bolster acceptance of knowledge about climate change.