The study aimed to design a training program consisting of Core Stability exercises to identify ‎its effect on some physical and skill variables of ‎backstroke swimming for female students in physical education faculty. The autor designed an experimental approach using the ‎experimental design of one experimental group. The participants in the study were (50) form third-year-female students at Jazeera physical education faculty, ‎University of Helwan in the academic year 2022/2023. The results revealed that the ‎training program using Core Stability exercises had a positive effect on various physical ‎variables (muscular strength of legs, muscle strength, back abdominal muscle strength, arm ‎and shoulder belt muscle strength, right and left arm muscle strength, and balance). The training program ‎improved the skill performance level (motor timing, motor linking “coordination/coupling") of backstroke swimming.