| Death Date | Name | Cemetery |
| 10/7/2000 | O'Brien, John Grady | Powers Chapel |
| 12/19/1985 | Ocker, Addie (Mrs) | Woodland |
| 2/10/1988 | Ocker, Clara (Miss) | Woodland |
| 4/8/1994 | Ocker, Douglas K | Woodland |
| 12/19/1979 | Ocker, George Alois | Woodland |
| 10/8/2000 | Ocker, James | Woodland |
| 2/12/1994 | Ocker, Lillian | Woodland |
| 4/29/1965 | Ocker, Oscar H | Woodland |
| 4/25/1984 | Odenbach, Edwin William | Clover Hill |
| 2/19/1992 | Odenbach, Wilma Mae | Clover Hill |
| 11/13/1964 | Olbrich, John | St Michael |
| 2/28/1984 | Olbrick, Ida (Mrs) | St Michael |
| 1/19/1988 | Olbrick, Stephanie (Mrs) | St Michael |
| 9/16/1953 | Olivo, Vanentino | Marlin |
| 7/9/1985 | O'Neal, E H (Dr) | Woodland |
| 7/8/1995 | O'Neal, Hazel Avent | Woodland |
| 3/17/1990 | O'Neill, Joe D | Woodland |
| 12/3/1969 | Ordner, Eddie | St Mary |
| 11/8/1961 | O'Regan, Michael | St Michael |
| 7/14/1948 | O'Riley, Julia | Ireland |
| 10/4/1954 | Osment, Oscar | Lott |
| 11/21/1978 | Osmont, Julia Mae (Mrs) | Clover Hill |
| 5/9/1958 | Otahal, Silvester | Woodland |
| 3/23/1973 | Owen, Irene (Mrs Roger) | Clover Hill |
| 6/12/1986 | Owens, Jon B Jr (Dr) | Forest Park (Houston, Texas) |
| 8/20/1974 | Owens, Luther | Rosebud |