In the evolving landscape of digital marketing, Nano-influencers—social media users with relatively small but highly engaged followings—have emerged as a powerful tool for brands seeking authentic engagement with niche audiences. While existing research has largely focused on macro and celebrity influencers, limited attention has been given to the unique impact of Nano-influencers on consumer behavior. This study aims to develop a conceptual framework to understand the influence of Nano- influencer marketing on consumer engagement. Specifically, it addresses four key objectives: identifying the demographic characteristics of consumers influenced by Nano-influencers, analyzing patterns of consumer engagement such as likes, comments, and shares, constructing a theoretical model of consumer behavior in response to Nano-influencer content, and determining the critical success factors that enhance the effectiveness of Nano-influencers. The proposed framework offers practical implications for marketers and contributes to the broader understanding of consumer psychology and digital marketing strategies in the context of Nano-influencer engagement.