There is a greater interest in understanding entrepreneurship intentions among youngsters and researchers frequently use the theory of planned behavior (TPB) for this purpose. However, factors influencing the TPB components are little explored. Keeping in view the research gap, in the present study, the TPB model is extended based on the Perceived Support Model. Thus, the objective is to test the effects of the three dimensions (educational, relational, and structural) of the perceived support model on the components of the TPB. The study is based on a cross-sectional survey method of data collection and the sample consists of Omani youngsters in the age range of 18 to 30 years (n=662). The analysis includes Confirmatory Factor Analysis for establishing the reliability and validity; and path analysis for testing the hypotheses. The results show an insignificant influence of perceived educational support on all of the dimensions of the TPB; while a positive and significant influence of perceived relational support on all the dimensions of the TPB. Furthermore, the result shows a positive and significant influence of perceived structural support on subjective norms and perceived behavioral control. Finally, attitude, subjective norms, and perceived behavioral control have positive and significant effects on entrepreneurship intention. Overall, our result shows that the perceived support model can be used to understand entrepreneurial intentions as well as the components of TPB. A number of recommendations are made based on the findings of the study.