Surname List: Begins with O: Our Family History

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

1. O Neil (1)
2. O' Brien (1)
3. O'Banion (11)
4. O'Brien (17)
5. O'Connell (1)
6. O'Conner (2)
7. O'Connor (16)
8. O'Dell (7)
9. O'Donnal (2)
10. O'Donnell (12)
11. O'Driscoll (4)
12. O'Flannery (1)
13. O'Hara (1)
14. O'Hare (1)
15. O'Killey (1)
16. O'Kussick (1)
17. O'Malley (1)
18. O'Meara (1)
19. O'Moore (1)
20. O'Neal (7)
21. O'Neil (29)
22. O'Neill (7)
23. O'Niel (1)
24. O'Sullivan (9)
25. O'Toole (2)
26. O'Warn (1)
27. Oaborn (1)
28. Oakden (1)
29. Oakes (1)
30. Oakeson (4)
31. Oakley (13)
32. Oakney (1)
33. Oaks (7)
34. Oats (1)
35. Obama (2)
36. Ober (2)
37. Oberdorf (1)
38. Oberg (1)
39. Oberholtzer (1)
40. Oberlander (2)
41. Obizzo (1)
42. Oborn (3)
43. Obotrites (1)
44. Obray (1)
45. Ocheltree (5)
46. Ockerman (1)
47. Ockey (1)
48. Oconner (1)
49. Odegaard (2)
50. Odegard (1)

51. Odell (9)
52. Odemard (1)
53. Odendahl (3)
54. Odette (1)
55. Odinsson (1)
56. Odle (4)
57. Oehmig (1)
58. Oelkers (1)
59. Oelsner (1)
60. Oesterling (8)
61. Oetzel (1)
62. Officer (1)
63. Offredi (1)
64. Ofgren (1)
65. Ogborne (2)
66. Ogden (29)
67. Ogilive (1)
68. Ogilvie (2)
69. Ogilvy (3)
70. Ogiz (1)
71. Oglesby (3)
72. Oglethorpe (1)
73. Ogren (2)
74. Ohland (2)
75. Ohman (1)
76. Oke (1)
77. Okerlund (1)
78. Okey (3)
79. Okoorian (1)
80. Olafrsdatter (1)
81. Olafsdatter (4)
82. Olafsdotter (3)
83. Olafsdottir (2)
84. Olafson (1)
85. Olafsson (6)
86. Olasdotter (5)
87. Olasson (4)
88. Olavsdatter (8)
89. Olavsen (2)
90. Olavsson (1)
91. Olcháin (1)
92. Olcott (1)
93. Old (1)
94. Oldaker (1)
95. Olden (1)
96. Oldenburg (25)
97. Older (1)
98. Oldfield (33)
99. Oldham (26)
100. Oldroyd (2)

101. Olds (12)
102. Oler (2)
103. Oles (9)
104. Olesdatter (4)
105. Olesen (2)
106. Olin (52)
107. Olinger (5)
108. Oliphant (11)
109. Olive (2)
110. Oliver (55)
111. Oliverson (6)
112. Olivier (71)
113. Olka (6)
114. Olkowski (1)
115. Ollchrothach (1)
116. Ollier (1)
117. Olliver (8)
118. Ollom (1)
119. Olmstead (47)
120. Olmsted (1)
121. Olmucaid (1)
122. Olnay (1)
123. Olney (327)
124. Olofsdotter (12)
125. Olofsdottir (2)
126. Olofson (1)
127. Olofsson (14)
128. Olpin (3)
129. Olrik (1)
130. Olsdatter (42)
131. Olsdotter (22)
132. Olsdottir (4)
133. Olsen (233)
134. Olsen Reich (2)
135. Olson (95)
136. Olsson (29)
137. Olufsen (2)
138. Olufsson (3)
139. Olyff (1)
140. Oman (22)
141. Omar (1)
142. Onan (5)
143. Ondler (1)
144. Ondovcik (5)
145. Ondovick (1)
146. Oneil (3)
147. Oney (1)
148. Ongley (1)
149. Op den Graeff (1)
150. Opdahl (1)

151. Opie (8)
152. Oppenheim (11)
153. Oram (1)
154. Orban (2)
155. Orchard (3)
156. Orcutt (4)
157. Ord (2)
158. Ordway (1)
159. Oreno (1)
160. Orewiler (1)
161. Orfitus (1)
162. Orgill (9)
163. Orkney (2)
164. Orlandos (1)
165. Orleans (8)
166. Ormand (1)
167. Orme (1)
168. Ormiston (1)
169. Ormond (9)
170. Ormsbee (13)
171. Ormsby (4)
172. Orphey (1)
173. Orr (11)
174. Orris (16)
175. Orrison (1)
176. Orry (2)
177. Orsborn (1)
178. Orsel (2)
179. Orth (5)
180. Ortiz (1)
181. Orton (31)
182. Orvice (1)
183. Orwin (8)
184. Os (1)
185. Osborn (29)
186. Osborne (26)
187. Osbourn (1)
188. Osburn (15)
189. Oscarson (1)
190. Oscroft (1)
191. Oseth (1)
192. Osgood (4)
193. Osguthorpe (1)
194. Oslund (1)
195. Osmun (1)
196. Osswald (1)
197. Ostensen (1)
198. Osterhout (10)
199. Osterlin (2)
200. Ostermann (8)

201. Ostler (127)
202. Ostrander (12)
203. Ostrom (14)
204. Ostrowski (1)
205. Oswald (15)
206. Oteley (8)
207. Otis (26)
208. Otley (1)
209. Ott (4)
210. Ottarrsson (1)
211. Ottati (1)
212. Otterburn (1)
213. Otterburne (5)
214. Ottersdotter (3)
215. Ottersen (7)
216. Otterstad (1)
217. Otterstrom (13)
218. Ottesdotter (3)
219. Ottesen (1)
220. Ottinger (15)
221. Ottley (23)
222. Ottman (7)
223. Otto (9)
224. Ottosen Nors (1)
225. Outcalt (1)
226. Outzen (14)
227. Ouzexre (1)
228. Ovaitt (1)
229. Ovard (1)
230. Overacker (1)
231. Overby (1)
232. Overgard (1)
233. Overlade (1)
234. Overman (1)
235. Overmann (1)
236. Overmeyer (1)
237. Overson (6)
238. Overton (32)
239. Oveson (13)
240. Oviatt (3)
241. Owen (39)
242. Owens (26)
243. Ower (6)
244. Owings (1)
245. Owres (1)
246. Oxborrow (13)
247. Oxenbridge (1)
248. Oxley (1)
249. Oxman (1)