In Cambodia, the rise of digital media and social platforms since the mid-2010s has intensified a surge in climate disinformation – deeply affecting Indigenous Peoples (IPs), who make up about 3% of the population and live in forests highly vulnerable to climate change and deforestation. This report explores how both online and face-to-face disinformation – often state-aligned – undermines IPs’ voices, discredits Indigenous knowledge, and legitimises harmful environmental practices. From false climate solutions to greenwashing and denial of deforestation, these narratives contribute to exclusion, land loss, and the silencing of environmental defenders. The report offers concrete policy recommendations, urging governments and international actors to integrate disinformation into human rights monitoring, support Indigenous-led initiatives, and strengthen digital access. Tackling climate disinformation is key to ensuring just, inclusive, and effective climate action in Cambodia and beyond.