The Nongovernmental International Panel on Climate Change (NIPCC) is a global collective of independent scientists and scholars dedicated to examining the causes and effects of climate change. Established in 2003 through a collaboration initiated by the Science and Environmental Policy Project (SEPP), NIPCC is supported by organizations such as The Heartland Institute and the Center for the Study of Carbon Dioxide and Global Change. Unlike governmental agencies, NIPCC takes a critical stance on mainstream climate change narratives, particularly those suggesting anthropogenic greenhouse gas emissions as primary culprits.

NIPCC has published 14 significant reports, including titles such as "Climate Change Reconsidered" and "Climate Change Reconsidered II," which explore a range of topics from physical science to biological impacts and critiques of prevailing climate theories. Their work emphasizes the natural variability of climate and provides alternative perspectives on global warming, seeking to foster informed discussion based on diverse scientific evidence. Through their publications, NIPCC offers a platform for voices and research that challenge conventional climate change assumptions.