Purpose: This paper investigates the entrepreneurial intentions of orange farmers in Muheza, Tanzania, by validating the extended theory of planned behaviour (TPB). Design/Methodology/ Approach: The study used a quantitative method approach, with cluster and simple random sampling, to recruit 349 orange farmers. The survey was conducted on 349 small-scale orange farmers in Muheza. To test the model, the constructs of entrepreneurship training, farmers’ attitudes, subjective norms, perceived behaviour control and entrepreneurial intention inputs were validated, followed by factor analysis and structural equation modelling. Findings: The study's results revealed the crucial role of perceived behaviour control and attitudes in driving the entrepreneurial intention of orange farmers. This significant influence underscores the importance of these factors in the development of entrepreneurial intention among orange farmers. It was also found that attitudes and perceived behaviour control predicted the entrepreneurial intention of orange farmers but not subjective norms, providing valuable insights for future research and policy development. Research Limitation: This study primarily focused on orange farmers in the Tanga Region, specifically in the Muheza District. Practical Implication: The findings suggest a clear path for action. To foster and enhance the entrepreneurial intentions of orange farmers, the government and policymakers should concentrate on instilling positive attitudes and controlling perceived behaviour. By promoting a positive stance toward entrepreneurship, we can significantly boost the willingness of orange farmers to engage in commercial farming, thereby contributing to the growth and development of Tanzania's agricultural sector. Social Implication: The study recommends policy options focusing on cultivating positive attitudes and perceived behaviour control among orange farmers to increase entrepreneurial intention, requiring concerted efforts from the government and policymakers. Originality / Value/ Novelty: It contributes to the body of knowledge, addressing the gap regarding the drivers influencing orange farmers' entrepreneurial intentions. Furthermore, establishing validated drivers of entrepreneurial intention among Tanzanian orange farmers could significantly assist the government in promoting economic development and achieving its vision of becoming a semi-industrialized country.