| Apostles | 3-2 | OAKELELY | Gilbert B. | 1930 Aug 5 | 1983 Nov 13 | Reverend; Beloved Husband and Father | |
| Unknown | OAKES | 'Edith Britt' | 1965 Apr 28 | From library records; date is interment date | |||
| Apostles | 7-12 | OBRECHT | Ida | 1886 Jul 31 | 1965 Mar 27 | ||
| Masonic | 39 | 7 | O'BRIEN | Donald W. | 1918 Oct 5 | 1994 Oct 21 | Born in Illinois |
| Masonic | 39 | 7 | O'BRIEN | Helen | 1921 Mar 10 | 1990 Jan 15 | Wife of Donald O'Brien |
| Apostles | 21-4 | O'BRIEN | Jay P. | 1909 Dec 19 | 1965 May 22 | ||
| Apostles | 21-5 | O'BRIEN | Lola E. | 1890 May 20 | 1982 May 18 | Beloved Mother | |
| Masonic | 27 | 5 | O'BRIEN | Louise McCurdy | 1914 May 31 | 2003 Sep 7 | Wife of Ray O'Brien |
| Masonic | 27 | 6 | O'BRIEN | R. Ray | 1911 | 1979 | |
| Apostles | 20-1 | O'BRIEN | Virgil D. | 1911 Aug 25 | 2002 Aug 16 | Tec4 U.S. Army World War II | |
| Apostles | 20-3 | O'BRIEN | Willmetta Fern | 1915 Mar 29 | 1990 Oct 29 | Beloved Wife of Virgil O'Brien | |
| Nativity | 1 | O'CONNELL | Alfred M. | 1933 Nov 21 | 1997 Oct 9 | ||
| Nativity | 1 | O'CONNELL | Marjorie C. | 1941 Oct 1 | |||
| Memorial Cir | 4-I | O'DELL | Theodore J. | 1930 Mar 30 | 2005 Nov 13 | ||
| Apostles | 11-6 | O'HARA | Annie Elizabeth | 1873 Jun 29 | 1964 Jan 12 | ||
| Nativity | 17 | OLSON | Frances Vernon | 1910 Dec 13 | 1989 Nov 17 | ||
| Nativity | 17 | OLSON | Irene H. | 1910 Feb 23 | 1985 Apr 24 | ||
| Devotion | 20 | OPDYKE | Grace C. | 1897 | 1960 Jul 4 | Wife of Lee Opdyke | |
| Devotion | 20 | OPDYKE | Lee J. | 1898 | 1970 | ||
| Apostles | 4-7 | OPPERMAN | Norman J. | 1917 May 30 | 1980 Jul 27 | Faithful Husband of Opal and Father | |
| Apostles | 4-8 | OPPERMAN | Opal O. | 1920 Dec 19 | 2008 Mar 3 | Beloved Wife of Norman and Mother | |
| Devotion | 19 | ORELL | Adam P. | 1974 Sep 20 | 1976 Feb 27 | ||
| Devotion | 2 | ORR | A.H. | 1913 Feb 3 | 1998 Nov 4 | Beloved Husband to Margaret & Father | |
| Masonic | 2 | ORR | Georgia | 1907 | 1984 | ||
| Devotion | 24 | ORR | Issac Newton | 1880 | 1970 | ||
| Masonic | 3 | ORR | James Newton | 1926 Oct 17 | 2006 Apr 9 | S2 U.S. Navy World War II | |
| Masonic | 2 | ORR | Luin S. | 1904 | 1962 | ||
| Devotion | 2 | ORR | Margaret E. | 1912 | 1993 | Beloved Wife to A.H. and Mother | |
| Devotion | 24 | ORR | Mollie E. | 1884 | 1961 | ||
| Masonic | 3 | ORR | Rebeca | 1970 Dec 22 | 1987 Jun 25 | ||
| Devotion | 2 | ORR | Rosa B. | 1909 Jun 11 | 1984 Sep 8 | ||
| Nativity | 3 | ORTIZ | Alfonso Sr. | 1912 Feb 9 | 1993 Mar 6 | Beloved Parent and Grandparent | |
| Nativity | 3 | ORTIZ | Celina G. | 1912 Apr 8 | 1999 Apr 24 | Beloved Parent and Grandparent | |
| Apostles | 20-16 | ORTIZ | Maria R. | 1942 Sep 29 | 1992 Apr 22 | Beloved Mother, Grandmother and Sister | |
| Nativity | 25 | OSBORN | April Adalina | 1978 Sep 28 | 1999 Jul 11 | We miss you, Jason, Dad, Frank, Jenn, Janet and Mom | |
| Nativity | 10 | OSBORN | Clifford R. | 1910 Jul 25 | 1971 May 12 | ||
| Devotion | 30 | OSTLER | Shirley Ann "Skippy" | 1937 | 1973 | Beloved Wife & Mother | |
| Nativity | 4 | OVERDORF | Clifford Bruce | 1958 Jan 13 | |||
| Nativity | 4 | OVERDORF | Graciela Quezada "Grace" | 1959 Sep 13 | 2006 Aug 21 | Wife of Bruce | |
| Mercy | 29 | OWEN | James Carl | 1958 Nov 16 | 1979 Jul | Beloved Son, Brother & Father | |
| Masonic | 15 | OWENS | Darrold Keith | 1929 Sep 4 | 1989 Oct 18 | ||
| Nativity | 14 | OWENS | Ethel R. | 1919 Apr 17 | Sep 21 2001 | ||
| Nativity | 14 | OWENS | Fred L. | 1911 May 16 | 1994 Jun 26 | Husband of Ethel Owens | |
| Masonic | 15 | OWENS | Loleta "Lolly" | 1931 Sep 21 | |||
| Nativity | 14 | OWENS | Michelle M. | 1976 Sep 14 | 1977 Jun 6 | ||
| Devotion | 29 | OYLER | Terry Wade | 1954 Jul 29 | 1980 Jun 13 | Our Only Begotten Son & Brother | |
| Apostles | 34 | OZANICH | Anthony John | 1923 May 2 | 2006 Jul 8 | SSgt U.S. Army World War II BSM | |
| Apostles | 34 | OZANICH | Ruby Irene | 1929 Oct 7 | Wife of Anthony Ozanich |