Author Last Name
| O'Connor, Doris |
82 Books |
16 Series |
| O'Dare, Deirdre |
92 Books |
2 Series |
| O'Gara, Rayne |
17 Books |
2 Series |
| O'Malley, Tierney |
17 Books |
2 Series |
| O'Quinn, Erin |
54 Books |
9 Series |
| O'Reilly, Terry |
64 Books |
1 Series |
| Obayani, Kambon |
12 Books |
1 Series |
| Oh, Madeleine |
27 Books |
2 Series |
| Okati, Willa |
145 Books |
7 Series |
| Oliver, Amelia |
13 Books |
2 Series |
| Olivia, R.M. |
7 Books |
1 Series |
| Olsen, Xya |
14 Books |
2 Series |
| Olson, Jodi |
53 Books |
1 Series |
| Ortega, Frey |
24 Books |
6 Series |
| Otto, Jay |
12 Books |
2 Series |
| Owen, Chris; Payne, Jodi |
6 Books |
1 Series |
| Owens, Lisa M. |
6 Books |
3 Series |