Surname List: Begins with O: Our Family History

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

1. O'Brayan (1)
2. O'Brian (1)
3. O'Brien (11)
4. O'Brien (or Bryan) (1)
5. O'Brien-Ashlock (1)
6. O'Bryan (1)
7. O'Daniel (1)
8. O'Day (1)
9. O'Day-Mackley (1)
10. O'Dell (1)
11. O'Donald (1)
12. O'Draine (1)
13. O'Farrell (3)
14. O'Ferrell (1)
15. O'Ferry (1)
16. O'Hare (1)
17. O'Killey (1)
18. O'Leary (2)
19. O'Neal (17)
20. O'Quain (1)
21. O'Quinn (6)
22. O'Rear (1)
23. O'Riley (1)
24. O'Sullivan (2)
25. Oakes (3)
26. Oakley (6)
27. Oaks (1)
28. Oates (46)
29. Oates (also Cates) (1)

30. Obanion (1)
31. Obenhaus (1)
32. Obermeyer (3)
33. OBriant (1)
34. OBrien (1)
35. OBryan (1)
36. OBryant (1)
37. Ockerman (35)
38. Odding (2)
39. Odding-Porter (1)
40. ODell (5)
41. Odell (Odle) (1)
42. Oden (5)
43. Oder (2)
44. Odle (O'Dell) (4)
45. Odom (17)
46. Odonnell (12)
47. Oestreicher (1)
48. Oettle (1)
49. Ofbel (1)
50. Offelen (1)
51. Offley (2)
52. Ogborne (6)
53. Ogburn (2)
54. Ogden (3)
55. Ogle (12)
56. Ogle (or Ogleman) (1)
57. Oglesbee (4)
58. Oglesby (759)

59. Oglesby (Dukes?) (1)
60. Oglesby (Lanning) (2)
61. Oglesby-Elphinstone (1)
62. Oglesby-Harrison (1)
63. Oglesby-Hessling (1)
64. Oglesby-Miller (1)
65. Oglesby-Rimack (1)
66. Ohara (5)
67. Ohl (1)
68. Olden (1)
69. Oldham (26)
70. Olenbush (14)
71. Olglesby (1)
72. Olin (1)
73. Oliphant (1)
74. Olive (2)
75. Olivella (8)
76. Oliver (48)
77. Olivier (2)
78. Olivilla (1)
79. Oller (23)
80. Olliff (2)
81. Ollivent (1)
82. Ollom (1)
83. Olmstead (1)
84. Olney (26)
85. Olsen (1)
86. Olson (8)
87. Olwin (1)

88. Omery (1)
89. Omohundro (1)
90. Oneal (8)
91. ONeil (4)
92. Oney (2)
93. Oniell (22)
94. Opdengraeff (25)
95. Opdengraeff van de Aldekerk (2)
96. Opdengraff van de Aldekerk (2)
97. Opdyck (1)
98. Opdycke (2)
99. Opdyke (2)
100. Opdyke (Opdycke) (3)
101. Opran (5)
102. Orcutt (3)
103. Ord (1)
104. Ordway (1)
105. Orear (23)
106. Orendorf (1)
107. Orme (3)
108. Ormes (1)
109. Ormshee (1)
110. Orr (17)
111. Orran (1)
112. Ortega (1)
113. Orton (1)
114. Osborn (11)
115. Osborne (26)
116. Osbourn (1)

117. Osburn (3)
118. Oser (1)
119. Osmun (1)
120. Osteen (2)
121. Ostrom (1)
122. Ostrom-Morrison (1)
123. Oswald (1)
124. Otis (1)
125. Ott (3)
126. Ott (?) (1)
127. Otton (1)
128. Outen (1)
129. Outlaw (3)
130. Overall (3)
131. Overholzer (1)
132. Overhuls (1)
133. Overland (13)
134. Overstreet (32)
135. Overzee (1)
136. Owen (16)
137. Owens (46)
138. Owensby (1)
139. Ownbey (1)
140. Owsley (16)
141. Oyler (3)
142. Ozan (Auzenne) (1)
143. Ozment (3)
144. Ozment (or Ozmond) (1)