Vocational High Schools implement a distinctive curriculum designed to equip graduates with the competencies required for both employment and entrepreneurship. However, limited employment opportunities have increased the importance of entrepreneurship as an alternative career pathway. This quantitative study examined the effects of entrepreneurial self efficacy, internship experience, and familial support on vocational high school students' entrepreneurial intention, both individually and simultaneously. The population consisted of 534 twelfth-grade students at a Vocational High School specializing in Business and Management in Surakarta, Indonesia. Using proportionate random sampling, 288 students were selected as respondents. The research instrument met the requirements of content validity, construct validity, and reliability. Data were analyzed using descriptive and inferential statistics. The findings indicate that entrepreneurial self efficacy, internship experience, and familial support each have a significant effect on entrepreneurial intention, and jointly have a significant influence on students' entrepreneurial intention. These findings support the Social Cognitive Theory and highlight the importance of creativity, problem-solving skills during internships, and positive communication within the family.