| Name | Stone Type | Stone Location |
|---|---|---|
| Mary M. O'Brien | Brick | C03 |
| Sheila O'Connor | Brick | C07 |
| Jessie O'Donnell | Medium Paver | A04 |
| Dorothy O'Neill | Large Paver | C02 |
| Ashley Lynn O'Rourke | Medium Paver | C01 |
| Kathleen C. O'Shaughnessy | Medium Bench | A06 |
| Anita Oberwortmann | Brick | C01 |
| Darlyne Oldfather | Brick | A10 |
| Nancy Bennett Oldfather | Brick | C10 |
| Nancy Oldfather Louvar | Brick | C07 |
| Verna Olinger | Brick | C04 |
| Anna Marie Clark Olive | Brick | B02 |
| Joye Oliver | Brick | C04 |
| Mary Oliver-LeMaster | Brick | C10 |
| Natalie Olmsted | Brick | |
| Sherry Orchard | Large Paver | B02 |
| Arlene Orlandi | Brick | C10 |
| Helen I. Orth | Brick | C04 |
| Gladys Osborne | Brick | C10 |
| Margaret Osburn | Brick | B00 |
| Marion P. Overstreet | Brick | A00 |
| Melva M. Owens | Brick | C07 |