| Oakes | George W. | |
| Oard | David Richard | 31 |
| Oard | James Henry | 37 |
| Oard | John Albert | 28 |
| Oard | Lottie | |
| Oard | Noah Oliver | 24 |
| Oard | Peter Lewis | 31 |
| Oarel | Sarah Ellen | 28 |
| Oaten | Fannie | |
| Oates | James Wyatt | 38 |
| Oates | J.W., Mrs. | |
| Oberfell | Joseph | 64 |
| Ocher | Joseph | |
| Ocker | Joseph | 55 |
| Odell | Simpson George | 65 |
| Odell | Sylvester | 37 |
| Odle | Samuel | |
| Offutt | Chas. A. | |
| Offutt | John William | 38 |
| Offutt | Lewis Gum | 33 |
| Ogan | Irvin Marcus | 31 |
| Ogan | Irwin M. | |
| Ogden | Andrew Fancher | 59 |
| Ogden | A.F. | |
| Ogelvie | S., Capt. | |
| Ogle | Henry | 30 |
| Ogle | Henry Clay | |
| Ohm | Charles | |
| Oldham | William Gunn | 28 |
| Olds | Norman Parks | 60 |
| Olinger | Edie, Mrs. | |
| Oliver | Charles | 21 |
| Oliver | John Reeves H. | |
| Oliver | John Salton | 23 |
| Oliver | J.H. | |
| Oliver | William Henry | 29 |
| Olmstead | Levi Willis | 56 |
| Olsen | Edward | 27 |
| Olsen | Fred | |
| Olsen | Helen, Miss | |
| Olsen | Helen, Miss | |
| Olsen | Peter | |
| Olsen | Wm. F. | |
| Olson | J.W. | |
| Olson | J.W., Mrs. | |
| Oppy | John Amandus | 42 |
| Oppy | J.A. | |
| Ord | Robert | 33 |
| Organ | Thomas Fletcher | 38 |
| Ormsby | C.S. | |
| Ormsby | George Walter | 40 |
| Ormsby | John Harper | 70 |
| Ormsby | Martin Powell | 38 |
| Ormsby | O.H. | |
| Ormsky | Ernest W. | <18 |
| Ormsky | Julia B. | <18 |
| Orr | infant | <1 |
| Orr | James | 51 |
| Orr | James Sheridan | 26 |
| Orr | John Francis | 29 |
| Orr | John F. | |
| Orr | Lottie | |
| Orr | William Jackson Thom | 28 |
| Orsi | Ancilla | 58 |
| Orsi | Raffaele | |
| Orsi | Raffaello | 61 |
| Ort | Julius | 60 |
| Orth | Anna, Mrs. | |
| Orth | Henry | |
| Orth | infant boy | |
| Orth | John Albert | 25 |
| Orth | John A., Mrs. | |
| Orth | Mrs. | |
| Ortman | Miss | |
| Ortman | Thomas | 70 |
| Orvold | James A. | |
| Orvold | James Jacobson | 46 |
| Osborn | Alexander | 51 |
| Osborn | Annie | <18 |
| Osborn | E.M. | <18 |
| Osborn | Francis Marion | 23 |
| Osborn | Francis M. | |
| Osborn | George William | 21 |
| Osborn | infant girl | |
| Osborn | John W. | |
| Osborn | John W. | |
| Osborn | L.S. | |
| Osborn | Marion | |
| Osborn | N.B. | |
| Osborn | Shadrich Little | 41 |
| Osborn | S.L., Mrs. | |
| Osborn | William Henry | 47 |
| Osborne | J. | |
| Osborne | S.L. | |
| Osborne | S.S. | |
| Osbourne | R.P. | |
| Osbourne | Saml., Mrs. | |
| Osmont | T.S. | |
| Ossmon | Abner | 37 |
| Oster | Henry | 33 |
| Ostroska | A. | |
| Otis | Ann | |
| Otis | Charles Wesley | 55 |
| Otis | Frank | 32 |
| Otis | Frank, Jr. | 2 |
| Otis | Frederick William | 24 |
| Otis | Isaac | 47 |
| Otis | J. | |
| Otis | Lewis Samuel | 21 |
| Ottenheimer | H.J. | |
| Ottley | Fred | |
| Ottmer | Henry Christian | 60 |
| Ouleway | Ernst E. | |
| Oulsnam | Thomas H. | |
| Overholser | Clarence W. | |
| Overholser | William R. | 33 |
| Overman | Edwin Cook | 38 |
| Overton | Adelia, Mrs. | |
| Overton | Albert Perry | 58 |
| Overton | A.P., Mrs. | |
| Overton | Fidelia | |
| Overton | James Marion | 53 |
| Overton | Jas. H. | |
| Overton | Jessie, Miss | |
| Overton | John | |
| Overton | John Henry | 55 |
| Overton | John Patton | 30 |
| Overton | Laura, Mrs. | |
| Overton | M.E., Mrs. | |
| Overton | Pearl | <1 |
| Overton | Talbert | |
| Overton | Talbot | |
| Overton | Theodore Talbot | 34 |
| Overton | William | |
| Overton | Wm. | |
| Overturf | G.F. | |
| Owen | Edward Thomas | 21 |
| Owen | Elder | |
| Owen | E.T. | |
| Owen | George | |
| Owen | Herbert | |
| Owen | Randolph Ross | 65 |
| Owen | Roderick S. | |
| Owen | W.D. | |
| Owen | W.D. | |
| Owen | W.D., Mrs. | |
| Owens | Charles Glenn | 27 |
| Owens | Ed | |
| Owens | Henry | 27 |
| Owens | Henry Jerry | 22 |
| Owens | Henry Tandy | 37 |
| Owens | H. | |
| Owens | James | 42 |
| Owens | John | 31 |
| Owens | John W. | |
| Owens | J., Mrs. | |
| Owens | Mary, Mrs. | 70 |
| Owens | Nancy | |
| Owens | Thomas | 36 |
| Owens | Thomas Alexander | 63 |
| Owens | Thomas Coleman | 35 |
| Owens | Thomas Perry | 40 |
| Owens | William Bryant | 30 |
| Owens | W.D. | |
| Owings | George Spencer | 21 |
| Owings | James Richard | 22 |
| Owings | John William | 25 |
| O'Bannion | W.F. | |
| O'Brien | Anthony | 38 |
| O'Brien | James | 34 |
| O'Brien | John | |
| O'Brien | John | |
| O'Brien | John | 70 |
| O'Brien | John | 49 |
| O'Brien | John | 58 |
| O'Brien | Matthew | 56 |
| O'Brien | Michael | 45 |
| O'Brien | M.J. | |
| O'Brien | Patrick | |
| O'Brien | Patrick | 46 |
| O'Brien | Thos. | |
| O'Callaghan | Jeremiah | 45 |
| O'Connell | Dennis | 25 |
| O'Connell | John | 30 |
| O'Conner | Annie, Miss | |
| O'Conner | James | 74 |
| O'Connor | Edward L. | |
| O'Connor | James Francis | 47 |
| O'Connor | Peter | 63 |
| O'Connor | Peter Louis | 29 |
| O'Connor | Robert | 26 |
| O'Connor | Thomas | 44 |
| O'Connor | Thomas | 34 |
| O'Dell | Susan | |
| O'Donnell | George | |
| O'Donovan | B. | |
| O'Farrell | Wm. F. | |
| O'Flaherty | Patrick Edward | 21 |
| O'Grady | James | 21 |
| O'Grady | John | 25 |
| O'Grady | Thomas | |
| O'Grady | William David | 22 |
| O'Hara | Bernard Edward | 31 |
| O'Hara | Cornelius D. | |
| O'Hara | John | 54 |
| O'Keefe | John | 37 |
| O'Keefe | Michael | 31 |
| O'Keen | Hiram | 58 |
| O'Leary | Edward Francis | 26 |
| O'Leary | Thomas | 82 |
| O'Leary | Thomas | 71 |
| O'Leary | William Francis | 26 |
| O'Leary | W.F. | |
| O'Leary | W.F., Mrs. | |
| O'Loughlin | John Franklin | 31 |
| O'Mealy | William | 48 |
| O'Meara | James | 65 |
| O'Meara | James Davidson | 27 |
| O'Meara | Miss | |
| O'Neal | David | 62 |
| O'Neal | Joseph Cornelius | 65 |
| O'Neill | Charles Henry | 21 |
| O'Neill | Henry | 43 |
| O'Neill | James | 39 |
| O'Neill | Michael | 40 |
| O'Neill | Owen | 43 |
| O'Niel | H. | |
| O'Phelan | James | 85 |
| O'Rear | William Edgar | 68 |
| O'Reilly | Martin | 45 |
| O'Sullivan | Daniel | 40 |
| O'Toole | James Joseph | 25 |