This study aimed to assess the nutritional knowledge and attitudes of physician interns graduated from King Abdul-Aziz University. A cross-sectional study was conducted among 100 physician interns who graduated in 2019, 2020, and 2021. An online self-administered questionnaire was used to collect data. A modified version of a validated questionnaire was used and provided to the participants in both Arabic and English versions, of which participants could choose one. This questionnaire consisted of three sections, including demographic data (five questions), attitude (47 questions), and knowledge (40 questions). A total of 100 (54 female and 46 male) participants completed the questionnaire. The nutrition and diabetes axis had the highest percentage of correct answers among the knowledge axes (55.6%), while the percentage of correct answers for the axis of nutrition and heart disease was the lowest (44%). There were no significant differences among most of the knowledge axes according to sex. However, there were significant differences between the averages of the answers of the male and female groups in the axis of nutrition and obesity only, where the male group had more correct answers than the female group. The average attitude of the study participants was almost good, with slight differences between males and females. A total of 51% of the participants were satisfied with the medical nutrition curriculum. The inadequacy of the nutritional curriculum among medical students was reflected in their satisfaction with their college programs and thus in their knowledge, attitudes, and confidence in providing nutritional counseling to patients. Intern physicians need to improve their clinical nutrition knowledge and skills to be able to provide patients with appropriate nutrition advice.