Understanding pro-environmental behaviours (PEBs) in protected areas has attracted considerable research attention. This perennial issue is pertinent in reducing negative compounded impacts and/or increasing positive impacts in protected areas. This study aims to provide a review of the literature to unpack the existing publications of PEBs in protected areas and to scope future research avenues. A total of 88 empirical research journal articles were collected through Scopus, Web of Science and Google Scholar databases. Results showed 43.18% of the articles analysed considered PEBs as a general group of behaviours while the remaining 56.82% were specific domains of PEBs including littering, staying on-trail, and car use. The majority of the literature adopted cross-sectional quantitative survey methodology, making limited use of longitudinal, experimental and qualitative research approaches, which may have limitations for future research. The review suggests modelling and predicting PEBs needs to be focused on a specific behaviour of a specific (target) audience in a specific context (time and place). There are avenues for potential future PEBs research; however, its specific domains, theoretical advancement, measurability and cultural influences, require significant rethinking for future research. • A comprehensive review on different types of pro-environmental behaviours in the context of protected areas is presented. • Majority of the literature adopts cross-sectional quantitative study design, making limited use of longitudinal, experimental and qualitative research approaches. • The review suggests modelling and predicting pro-environmental behaviour needs to be focused on a specific behaviour of a specific (target) audience in a specific context (time and place). • Key challenges and opportunities in pro-environmental behaviour research include measuring actual (observed) behaviour as opposed to intention or reported behaviour, investigating pro-environmental behaviour of children and youth, and examining the role of cultural factors on pro-environmental behaviour in protected areas.