Nowadays, environmental problems are rising due to the individuals’ consumption behaviour, which necessitates serious attention. Consumers gradually become aware of the effect of their consumption behaviour on the environment and make a difference. Social media, particularly Instagram, play a major role in increasing awareness and promoting environmentally friendly behaviour. Hence, it is crucial to investigate the impact of Instagram on green consumption intention, which is the best predictor of behaviour. By reviewing the existing literature, the current study develops a conceptual model regarding the effect of Instagram influencers’ green activity on followers’ intention. As the model proposes, green attitude and green consumption intention are shaped among followers by the Instagram influencers’ green concern, green photo content, and green word of mouth (WOM). Additionally, it is proposed that the perceived credibility of followers moderated the link between green WOM and green consumption intention. The study contributes to the body of knowledge by developing a new model that helps identify green consumption intention determinants.