| Name | Date of Death | Place Interred | City of Cemetery |
|---|---|---|---|
| O'Brien, Dana | Hartline Cemetery | Hartline, Grant Co., WA | |
| O'Brien, Harry | Hartline Cemetery | Hartline, Grant Co., WA | |
| O'Conner, Patrick M | 1977 | Hartline Cemetery | Hartline, Grant Co., WA |
| O'Flaherty, John | 1902 | Thompson/Shrock Cemetery | Hartline, Grant County, WA |
| O'NEAL, Frankie Jean Bell | 1975 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| O'Neal, T C | Hartline Cemetery | Hartline, Grant Co., WA | |
| O'Neal, Walter James | 2 January 1905 | Hartline Cemetery | Hartline, Grant Co., WA |
| O'Neil, Andrew | 10 Sep 1914 | St. John's Catholic Cemetery | Hartline, Grant County, WA |
| OAKS, Betty Holden | Ephrata Cemetery | Ephrata, Grant Co., WA | |
| OAKS, Chester Dale | 7/19/1990 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OAKS, Judy | 1959 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OBERG, Conrad | 2001 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OBERG, Margaret | 1976 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| ODDSON, Farnum T | 1951 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| ODDSON, Farnum T | 1951 | Grant County Burial Permits | Grant County, WA |
| ODEGARD, Janet Ann | 9/10/1940 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OGAN, Charles | 1935 | Grant County Burial Permits | Grant County, WA |
| OGAN, George | 1928 | Grant County Burial Permits | Grant County, WA |
| OGAN, Mary | 1933 | Grant County Burial Permits | Grant County, WA |
| OHLIN, F H | 1942 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OHLSON, Peter A | 8/1/1943 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OKERBERG, John A | 1942 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OKERBERG, Lizzie M | 1947 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLCOTT, Harold W | 9/26/2001 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLCOTT, Lola E | 3/2/2002 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLCOTT, Richard D | Ephrata Cemetery | Ephrata, Grant Co., WA | |
| OLCOTT, Tracy J | 3/13/1994 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLESEN, A P | 1940 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLESEN, Anders P Jr | 9/28/1998 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLESEN, Anna Marie | 1958 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLESEN, Niels | 1934 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSEN, Christine M | 1971 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSEN, Infant girl | 11/18/1947 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSEN, Michael | 1953 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSEN, Ole L | 1951 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSEN, Robert M | 1980 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSON, Clinton L | 10/2/1986 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSON, Elmer E | 1967 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSON, Eva Ruth | 11/18/1947 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSON, Isabelle | 1987 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSON, Phyllis E | 6/26/1985 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OLSON, Eva Ruth | 1947 | Grant County Burial Permits | Grant County, WA |
| OMLID, Arnold | 12/11/1933 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OMLID, Arnold | 1933 | Grant County Burial Permits | Grant County, WA |
| OSBORN, Daniel Thomas | 1923 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OSBORN, Flora A | 1950 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OSBORN, Johnny Wayne | 11/23/1946 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OSBORN, Minnie J | 1968 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OSBORN, Omar H | 1970 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| Osborn, Cleo Dell Maude | 15 December 1952 | Hartline Cemetery | Hartline, Grant Co., WA |
| Osborn, Donald W | 1975 | Hartline Cemetery | Hartline, Grant Co., WA |
| Osborn, Etta May | November 1982 | Hartline Cemetery | Hartline, Grant Co., WA |
| Osborn, Eugene Olen | 16 June 1959 | Hartline Cemetery | Hartline, Grant Co., WA |
| Osborn, Joseph Meddley | 15 August 1966 | Hartline Cemetery | Hartline, Grant Co., WA |
| Osborn, Louis A | 28 May 1921 | Hartline Cemetery | Hartline, Grant Co., WA |
| OSBORNE, Johnny Wayne | 1946 | Grant County Burial Permits | Grant County, WA |
| OSGOOD, Maurice | 1918 | Grant County Burial Permits | Grant County, WA |
| OSLICK, Frank J | 1992 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OSLICK, Loretta E | 1964 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OSTERHOUT, Darwin | 2004 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OSTERHOUT, Esther | 2004 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OUR DEAR BOBBY CARLILE | 5/17/1947 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OWEN, Alonzo W | 1942 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OWEN, Laverd W | 1/7/1908 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OWEN, Marion I | 1980 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OWEN, Salley W | 1935 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OWEN, Valita | 1936 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OWEN, Laverd K | 1908 | Grant County Burial Permits | Grant County, WA |
| OWEN, Sallie | 1935 | Grant County Burial Permits | Grant County, WA |
| OWINGS, Clyde | 1970 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OWINGS, Irene | 1983 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OWINGS, William J | 9/27/1970 | Ephrata Cemetery | Ephrata, Grant Co., WA |
| OWSLEY, H Stewart | 5/22/1996 | Ephrata Cemetery | Ephrata, Grant Co., WA |