Surname List: Begins with O

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

1. O' Hara (3)
2. O'Bannon (1)
3. O'Brien (7)
4. O'Connell (4)
5. O'Connor (3)
6. O'Day (2)
7. O'Dell (2)
8. O'Donal (1)
9. O'Donnell (5)
10. O'Guinn (1)
11. O'Hara (9)
12. O'Hearon (9)
13. O'Keefe (1)
14. O'Leary (1)
15. O'Loughlin (16)
16. O'Neil (3)
17. O'Riley (1)
18. O'Shea (4)
19. Obenchain (1)
20. Oberlatz (1)
21. Ochsner (3)
22. Ockenfels (5)
23. Oden (4)
24. Odett (1)
25. Odom (1)
26. Ofstedahl (1)
27. Ogata (9)

28. Ogden (2)
29. Ogren (18)
30. Ogren-Dehn (2)
31. Ohland (1)
32. Ohls (2)
33. Ohlund (3)
34. Ojala (1)
35. Oki (8)
36. Olafsen (1)
37. Olavson (1)
38. Olberg (1)
39. Olcott (3)
40. Oldach (1)
41. Oldham (1)
42. Olds (1)
43. Olen (10)
44. Olesdatter (2)
45. Oliphant (1)
46. Oliva (7)
47. Ollila (1)
48. Olloffs (1)
49. Olmstead (2)
50. Olofsdotter (2)
51. Olsdatter (28)
52. Olsdatter Grosberg (1)
53. Olsdatter Hovland (1)
54. Olsdatter Teig (1)

55. Olsdatter Vaterud (1)
56. Olsdotter (5)
57. Olsdr (1)
58. Olsdtr Jastad (1)
59. Olsdtr Reiseter (1)
60. Olsen (75)
61. Olsen Aasbye (1)
62. Olsen Aga (1)
63. Olsen Helland (1)
64. Olsen Hovland (1)
65. Olsen Sandvig (1)
66. Olson (93)
67. Olson (Carlson) (1)
68. Olson (Erickson) (1)
69. Olson Torgerson (1)
70. Olsson (3)
71. Oltman (2)
72. Olufsen Børves (1)
73. Olwell (1)
74. Ommundsdatter (1)
75. Omvig (1)
76. Ones (6)
77. Oos (4)
78. Ootsart (1)
79. Opdahl (2)
80. Oppegard (2)
81. Oppel (4)

82. Oprian (1)
83. Orcut (1)
84. Orcutt (17)
85. Ore (4)
86. Oreland (1)
87. Orell (1)
88. Orem (1)
89. Oremus (1)
90. Orlebeke (3)
91. Orman (1)
92. Ormonde (1)
93. Ormsdtr Lydvo (1)
94. Orr (10)
95. Orrell (1)
96. Orsco (1)
97. Orsko (1)
98. Orwing (1)
99. Oryall (2)
100. Osame (1)
101. Oshesky (2)
102. Oshima (5)
103. Osler (3)
104. Osmundsdatter (2)
105. Osmundsdr (1)
106. Osmundsen (4)
107. Osmundsen Førde (1)
108. Osovski (3)

109. Ostdahl (3)
110. Osteen (3)
111. Oster (1)
112. Osterberg (1)
113. Ostiguy (1)
114. Ostrander (4)
115. Ostrem (1)
116. Ostrus (3)
117. Oswald (1)
118. Otis (1)
119. Ottbragden (1)
120. Otte (1)
121. Ottenbacher (2)
122. Otterson (1)
123. Otto (1)
124. Ouellet (5)
125. Ourada (13)
126. Outlaw (6)
127. Overacker (1)
128. Overby (1)
129. Overgaard (2)
130. Owen (4)
131. Owenson (15)
132. Oxford (2)
133. Oyri-Qviil (1)

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