Surname List: Begins with O


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

1. O'Brien (36)
2. O'Brien Hatfield (3)
3. O'Chilston (1)
4. O'Connor (6)
5. O'Connors (1)
6. O'Dea (3)
7. O'Dell (18)
8. O'Donnell (7)
9. O'Dowd (1)
10. O'Hare (1)
11. O'Hern (3)
12. O'Herron (2)
13. O'Kane (2)
14. O'Kory (1)
15. O'Linn (1)
16. O'Malley (2)
17. O'Neal (2)
18. O'Neil (5)
19. O'Neill (4)
20. O'Rourke (2)
21. O'Shea (2)
22. O'Toole (5)
23. Oak (1)
24. Oakes (46)
25. Oaks (1)
26. Oatley (1)
27. Ober (1)
28. Oberdorf (5)
29. Oberg (1)
30. Oberholtzer (8)
31. Obey (17)
32. Obie (1)
33. Odding (1)
34. Odell (5)
35. Odum (1)
36. of Aalst (1)
37. of Alamannia (4)
38. of Alsace (6)
39. of Anhalt-Dessau (2)
40. of Anjou (4)
41. of Aquitaine (2)
42. of Argyle (1)
43. of Argyll (1)
44. of Arles (3)
45. of Austrasia (2)
46. of Austria (2)
47. of Autun (1)
48. of Auvergne (2)
49. of Bavaria (3)
   50. of Bayeux (1)
51. of Bernicia (2)
52. of Billung (1)
53. of Blaen Llyfni (1)
54. of Blois (10)
55. of Boulogne (3)
56. of Bourges (3)
57. of Brabant (1)
58. of Brittany (6)
59. of Burgundy (4)
60. of Cambridge (2)
61. of Carinthia (1)
62. of Champagne (1)
63. of Chester (1)
64. of Clare (3)
65. of Clermon (1)
66. of Cologne (4)
67. of Cumbria (1)
68. of Dagsbourg (2)
69. of Dalriada (14)
70. of Darnau (1)
71. of Dunbar (4)
72. of Durham (2)
73. of East Francia (1)
74. of England (18)
75. of Falaise (2)
76. of Flanders (10)
77. of France (13)
78. of Friuli (3)
79. of Ghistelles (2)
80. of Gleiberg (3)
81. of Greystoke (2)
82. of Guelgers (1)
83. of Hainault (4)
84. of Hainaut (6)
85. of Hasbaye (2)
86. of Hesse (1)
87. of Holland (2)
88. of Hungary (1)
89. of Huntington (2)
90. of Ireland (2)
91. of Italy (7)
92. of Ivrea (1)
93. of Kendal (3)
94. of Kent (3)
95. of Kiev (7)
96. of Landen (1)
97. of Laon (1)
98. of Lens (1)
   99. of Lorraine (8)
100. of Louvain (6)
101. of Lower Lorraine (2)
102. of Luxembourg (4)
103. of Manau Gododdin (1)
104. of Mecklenburg (1)
105. of Mecklenburg-Strelitz (1)
106. of Mercia (3)
107. of Metz (5)
108. of More (1)
109. of Mormaer (1)
110. of Nordau (2)
111. of Normandy (14)
112. of North Wales (4)
113. of Northumberland (4)
114. of Northumbria (5)
115. of Norway (1)
116. of Norwich (1)
117. of Orlamunda (2)
118. of Orleans (2)
119. of Paris (4)
120. of Picts (1)
121. of Poitou (2)
122. of Provence (2)
123. of Raby (4)
124. of Ravensworth (5)
125. of Rheims (1)
126. of Richard's Castle (3)
127. of Rome (2)
128. of Roucy (3)
129. of Savoy (2)
130. of Saxony (4)
131. of Scotland (4)
132. of Scots (1)
133. of Senlis (1)
134. of Spain (2)
135. of Stainton (1)
136. of Suevian (1)
137. of Swabia (2)
138. of Sweden (5)
139. of Teck (1)
140. of the Anglachau (1)
141. of the Anglo-Saxons (1)
142. of the Austrasia Palace (1)
143. of the Bessin (1)
144. of the Carolingian Empire (3)
145. of the Franks (6)
146. of the Gallo-Roman (2)
147. of the Holy Roman Empire (2)
   148. of the Lenni-Lanape Tribe (1)
149. of the Massgua (1)
150. of the Nine Hostages (1)
151. of the Palace in Austrasia (4)
152. of the Palace to Siegbert (1)
153. of the Picts (2)
154. of the Scots (13)
155. of the Upper Rhine (7)
156. of the Wetterau (1)
157. of the Winlaton Manor (1)
158. of Tongres (2)
159. of Tours (5)
160. of Treves (3)
161. of Troyes (1)
162. of Troyes and Meaux (2)
163. of Tuscany (1)
164. of Ulster (1)
165. of Uzes (2)
166. of Valois (1)
167. of Verdun (4)
168. of Vermandois (7)
169. of Vitry-en-Perthois (1)
170. of Wessex (11)
171. of West Francia (3)
172. of West Saxon (7)
173. of Westerbourg (1)
174. of Wiltshire (1)
175. of Winchester (2)
176. of Workington (2)
177. of Wormgau (2)
178. Ogden (3)
179. Ogilsbie (1)
180. Ogorzalek (1)
181. Ojers (15)
182. Oldes (1)
183. Olds (1)
184. Oliva (1)
185. Olivarez (1)
186. Oliver (15)
187. Olivier (1)
188. Oliviers (2)
189. Olix (17)
190. Olmstead (1)
191. Olney (5)
192. Olsen (2)
193. Olstrum (1)
194. Olszewski (1)
195. Oltz (1)
196. Omstead (2)
   197. Onderank (1)
198. Op den Graeff (1)
199. Opie (1)
200. Opp (1)
201. Oppenheim (5)
202. Opper (2)
203. Oprean (3)
204. Orcutt (18)
205. Ordway (1)
206. Orem (1)
207. Oris (1)
208. Ormsby (1)
209. Orr (8)
210. Ortega (1)
211. Orton (1)
212. Ortwein (1)
213. Orvin (2)
214. Orvis (1)
215. Osborn (15)
216. Osborne (3)
217. Osburne (2)
218. Osgood (9)
219. Osland (2)
220. Osmin (1)
221. Ostapowycz (2)
222. Osterhout (2)
223. Ostheimer (1)
224. Ostrander (7)
225. Otia (1)
226. Otis (2)
227. Ottman (1)
228. Otto (6)
229. Otwell (1)
230. Ouderkirk (2)
231. Ouelette (1)
232. Ouellet (8)
233. Oughterson (3)
234. Outhouse (1)
235. Ouvrard (1)
236. Overholt (6)
237. Overpeck (2)
238. Overton (2)
239. Owen (6)
240. Owens (8)
241. Owley (1)
242. Owston (1)