Surname List: Begins with O


All surnames beginning with O, sorted alphabetically (total individuals):

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1. O'Baker (5)
2. O'Bannon (1)
3. O'Brian (1)
4. O'Brien (10)
5. O'Connell (11)
6. O'Conner (1)
7. O'Connor (3)
8. O'Daniel (2)
9. O'Day (1)
10. O'Fallon (6)
11. O'Farrell (11)
12. O'Flannery (1)
13. O'Flynn (1)
14. O'Grince (2)
15. O'Gwynn (1)
16. O'Hair (11)
17. O'Hara (10)
18. O'Harrow (1)
19. O'Haver (11)
20. O'Leary (1)
21. O'Malley (7)
   22. O'Mares (1)
23. O'Neal (15)
24. O'Neil (2)
25. O'Neill (1)
26. O'Niel (1)
27. O'Rourke (8)
28. O'Toole (1)
29. O.Brien (1)
30. Oakes (1)
31. Oakley (3)
32. Oaks (1)
33. Oathwaite (1)
34. Obenshain (2)
35. Ober (4)
36. Oberle (1)
37. Obraza (1)
38. Obryan (1)
39. Odell (3)
40. Oden (1)
41. Odom (9)
42. Oester (21)
   43. Offman (1)
44. Offutt (1)
45. Often (9)
46. Ogden (1)
47. Ogilvee (1)
48. Ogle (3)
49. Ohler (16)
50. Oiler (8)
51. Ojeda (1)
52. Okeover (1)
53. Olden (1)
54. Oldfield (2)
55. Oleksyn (1)
56. Oleson (2)
57. Olinger (1)
58. Oliver (9)
59. Olivier (4)
60. Ollada (3)
61. Olsen (1)
62. Olson (3)
63. Oltmanns (2)
   64. Ondick (1)
65. Opel (21)
66. Oppedal (1)
67. Orchard (1)
68. Ord (2)
69. Orgovan (1)
70. Orlando (1)
71. Orndorf (1)
72. Orndorff (7)
73. Orner (19)
74. Orr (10)
75. Orris (1)
76. Ort (7)
77. Orton (1)
78. Osborn (2)
79. Osbourne (1)
80. Osburn (2)
81. Osburne (1)
82. Osgood (3)
83. Oshinsky (1)
84. Oss (4)
   85. Oster (10)
86. Ostewig (1)
87. Ostrom (5)
88. Oswalt (1)
89. Ott (3)
90. Otto (17)
91. Oubre (1)
92. Ours (1)
93. Ousley (1)
94. Outen (1)
95. Overby (15)
96. Overcash (1)
97. Overington (1)
98. Overly (2)
99. Overstreet (4)
100. Overton (2)
101. Owen (4)
102. Owens (21)
103. Owings (1)
104. Owl (2)
105. Ozman (1)
  

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