| Last Name |
First Name |
County |
Company |
Regiment |
| O'Dell |
W. A. |
Sullivan | F | 63rd TN Inf. |
| O'Neal | John H. | Polk | B | 29th TN Inf. |
| O'Neill | Edmond E. | Port St. Pere France | B | 2nd Conf. TN |
| Odeneal |
L. B. |
Giles | B | 32nd TN Inf. |
| Odle | Dave | White | A | 8th TN Cav. |
| Odom | Samuel C. | Cannon | C | 22nd TN Cav. |
| Oglesby | McCage M. | Wilkes, NC | F | 4th TN Cav. |
| Oldham | William Robert | Lincoln | K | 1st TN Inf. |
| Oliver | Andrew | Smith | B | 7th TN Inf. |
| Orr | Calvin J. | Giles | G | 3rd TN Inf. |
| Orr | William E. | Rutherford | C | 12th TN Inf. |
| Osborne |
J. F. (Dr.) |
Maury | D | 33rd TN Inf. |
| Osborne | James M. | Rockingham, NC | F | 45th VA |
| Osborne | John Wright | Roane | F | 43rd TN Inf. |
| Osbatharp | Erasmus G. | Jackson | G | 8th TN Cav. |
| Overall | William Frank | Rutherford | C | 4th TN Cav. |
| Owen | John A. | Halifax, VA | A | Penick's Batt./ Pogue's Batt. |
| Owens | Henry A. | Henderson | | 27th TN Inf. |
| Ownby | Samuel M. | Cannon | I | Nixon's Cav. |