| Sinclair, Robert | Lifeguard II | Fire | | |
| Simpson, Cooper | Lifeguard II | Fire | | |
| Scott, Zane | Lifeguard II | Fire | | |
| Schwenk, Jacob | Lifeguard II | Fire | | |
| Smith, Eric | Lifeguard III | Fire | | |
| Smith, Christina | Literacy Coordinator | Library - City | 949-717-3874 | |
| Santibanez, Erick | Maintenance Aide | Public Works | 949-718-3463 | |
| Sanchez, Yair | Maintenance Worker | Public Works | 949-718-3461 | |
| Springer, Charles | Management Analyst, Senior | Public Works | 949-718-3466 | |
| Smouse, Trevor | Management Analyst, Senior | Public Works | 949-644-3325 | |
| Seo, Leah | Office Assistant | Public Works | 949-644-3331 | |
| Sanchez, Jessica | Permit Technician II | Public Works | 949-644-3041 | |
| Saldana Iii, Ernest | Public Works Crew Chief | Public Works | 949-718-3478 | |
| Schweitzer, Theresa | Public Works Finance/Administrative Manager | Public Works | 949-644-3335 | |
| Suzuki, Tracy | Records Specialist | Public Works | 949-644-3343 | |
| Soto Valladolid, Barbara | Recreation Coordinator | Recreation & Senior Services | 949-718-1861 | |
| Soto Valladolid, Felipe | Recreation Coordinator | Recreation & Senior Services | 949-644-3163 | |
| Schilling, Chloe | Recreation Coordinator | Recreation & Senior Services | 949-644-3154 | |
| Sain, Cristin | Recreation Coordinator | Recreation & Senior Services | 949-270-8155 | |
| Strozier, Savannah | Recreation Coordinator, Assistant | Recreation & Senior Services | | |
