| Name | Phone Number | Room | Title | Department (Location) | |
| Olga Pilipets | 644-7454 x3562 | Olga.Pilipets@gcccd.edu | 31-384B | Math Instr | Math (Grossmont) |
| Olga Vienna | 644-7454 x3894 | Olga.Vienna@gcccd.edu | 50-590O | English Instr | English (Grossmont) |
| Olivia Carroll | Olivia.Carroll@gcccd.edu | Business Instr | Business (Grossmont) | ||
| Olivia Krausie | 644-7178 | Olivia.Krausie@gcccd.edu | 60-600B | Admissions and Records Spec/Veterans Office | Veterans Affairs (Grossmont) |
| Omar Lopez | 644-7454 x3414 | Omar.Lopez@gcccd.edu | K102 | Instructional Lab Assist/Auto | Automotive Technology (Cuyamaca) |
| Ona O'Keefe | Cardiovascular Technology Instr | Cardiovascular Technology (CVTE) (Grossmont) | |||
| Oralee Holder | 644-7496 | Oralee.Holder@gcccd.edu | 52-564A | English Professor | English (Grossmont) |
| Oscar Canedo | 644-7454 x3942 | Oscar.Canedo@gcccd.edu | History Instr | History (Grossmont) | |
| Oscar Larios | 644-7454 x3751 | Oscar.Larios@gcccd.edu | Math Instr | Math (Grossmont) | |
| Osvaldo Amezcua | Valo.Amezcua@gcccd.edu | PDC Instr | Personal Development Counseling (Cuyamaca) |