2015 California Interscholastic Federation Southern Section Swimming & Diving Championships – Division III
- Diving: Results
- Swimming: Results │ Team Scores
- Final Recap
- Location: Riverside City College
- Girls: Pasadena Poly 293 / Royal 219
- Boys: Rio Mesa 268.5 / Calabasas 189

Deanne Umbay of Sierra Canyon won the 200 IM and 100 back at CIFSS Division III. Photo: Anne Lepesant

Nathan Ketcheside of Riverside Poly before winning 100 free at CIFSS Division III. Photo: Anne Lepesant

Casey Cunningham of Saddleback Valley Christian won the 500 free at CIFSS Division III. Photo: Anne Lepesant

Adrian Hui of Webb and Nathan Ketcheside of Riverside Poly tied to win the 50 free at CIFSS D3. Photo: Anne Lepesant