This evaluative and relational study determined the influence of English and Mathematics on the Physics achievement of public high school senior students in Naga City, Philippines. Results showed that the students had an average achievement level in Speaking, Reading, Literature and Grammar. The overall achievement level in Advanced Algebra, Trigonometry and Statistics was average. The overall achievement level in Optics and Waves, Nuclear Physics and Mechanics was average. There was a significant positive relationship between English and Physics achievement, and between Mathematics and Physics Achievement. Reading, Literature and Grammar were the areas in English that significantly influenced Physics achievement. In Mathematics, Advanced Algebra and Trigonometry significantly influenced Physics achievement. The students’ achievement between English and Physics had no significant difference at 1% level but significantly different at 5% level. Mathematics and Physics achievement had no significant difference at 1% and 5% levels. There was no significant difference between schools C and D; A and C; and schools B and C at 5% and 1% levels. However, the achievement level between schools A and B, B and D, and schools A and D were significantly different at 1% level.