- Oaks
-
Elizabeth B: 1769, D: 1853
- Oates
-
Lettie B. (Mrs.) (née Livens) B: circa 1893, D: before 1920
- Obe
-
Inez B: 1905, D: 1983
- Obent
-
Edward B: 1889, D: 1959Mary Elizabeth (Mrs.) (née Bonham) B: 1895, D: 1970
- Oberender
-
Anna Christine (Mrs.) (née Wing) B: 1904, D: 1977Beverly Ann (Mrs.) B: 1933, D: 2015Emily J. (Mrs.) (née Hubler) B: 1853, D: 1930Frank Lee B: 1924, D: 1945Howard Kenneth B: 1915John B: 1849, D: 1939Keith Wayne B: 1958, D: 2015Lowell Eugene B: 1933, D: 2009Merwin Thomas B: 1927, D: 1942Orville Eugene B: 1931, D: 2019Paul B: 1913, D: 1915
- Obregon Salido
-
Dolores B: 1855
- Obregon
- Ocington
-
Mary B: 1669, D: 1725
- Ockey
-
Jennie Ruth (Mrs.) (née Van Ausdal) B: 1908, D: 1993Rulon Theodore B: 1906, D: 1989
- Oddie
-
Agnes B: 1882, D: 1965
- Oddson
- Odell
-
Andrew R. B: 1850, D: 1918Bessie C. B: 1890Jerry Marshall B: 1902Julia Matilda B: 1896Logan B: 1893, D: 1944Lyla Eliza (Mrs.) (née Mosley) B: 1898, D: 1972Mary E. B: 1893
- Odell (cont.)
-
Ninette Liona (Mrs.) (née Van Valkenburg) B: 1858, D: 1946