This study aimed to determine the relationship between Youtube as an alternative instruction and learning Physical Science. It investigates the potential of youtube as a learning resource, considering its popularity and availability of educational videos related to physical science on the platform. This study used a correlational research design. The respondent consists of 50 grade 12 students from Dagatan National High School, selected through simple random sampling technique. A Likert Scale questionnaire survey used in this study. This study employed mean, standard deviation, and Pearson product-moment correlation. The data showed a significant relationship between Youtube as an alternative instruction and learning Physical Science. The results suggest that YouTube has the potential to enhance students learning experiences, engagement, and understanding in the subject.