This study aimed to identify the level of knowledge, attitudes, and behavior of elementary school students in Buleleng District on climate change. Data were collected with a Guttman-scale questionnaire (true-false) for the knowledge domain and Likert scale for attitude and behavior. The area of knowledge consists of four aspects: the fundamental concept aspect (20 statements), the cause (13 comments), the impact (8 comments) as well as mitigation and adaptation (10 statements) while the attitude domain with 12 statements and the behavior of 11 statements. The survey was conducted on 153 students of fourth, fifth, and sixth grade from three different public schools. The results of this study revealed that the majority of participants show moderate levels for understanding basic concepts, impacts, mitigation, and adaptation, but unfortunate for the causes of climate change. Overall, the majority of respondents indicated moderate levels of knowledge of climate change, whereas in attitude but behavior were good. The results concluded that students’ literacy on climate change needs to be improved primarily through teaching strategies on relevant materials to foster awareness of action on climate change mitigation and adaptation from an early age.