Surname List: Begins with O


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

1. O conner (1)
2. O'Brien (13)
3. O'Bryan (2)
4. O'Byme (1)
5. O'Caellaig (1)
6. O'Cathain (14)
7. O'Connell (4)
8. O'Fáeláin (1)
9. O'Hara (2)
10. O'Leary (1)
11. O'Mahoney (1)
12. O'Morda (1)
13. O'Mulloy (3)
14. O'Neal (1)
15. O'Neale (1)
16. O'Neil (1)
17. O'Neill (3)
18. O'Rourke (1)
19. O'Shaughnessy (2)
20. O'Toole (4)
21. Oakman (1)
22. Oberender (2)
23. Oberfeld (1)
24. Oberg (1)
25. Oberle (10)
26. Oberst (1)
27. Oberweg (1)
28. Obrien (1)
29. Oby (1)
30. Ocher (1)
31. Ochs Von Ruckershausen (2)
32. Ocker (1)
33. Ockher (1)
34. Octavia (1)
35. Odell (1)
36. Odil (16)
37. Odneal (17)
38. Oehler (1)
39. Oehlschlager (1)
40. Oehrke (1)
   41. Oels (1)
42. Oerly (13)
43. Oesper (1)
44. Oesterlin (1)
45. Oesterreicher (1)
46. Oeth (1)
47. of Albon (1)
48. of Alemannia (3)
49. of Altdorf (2)
50. of Angus (1)
51. of Anjou (1)
52. of Aquitaine (2)
53. of Aragon (1)
54. of Austrasia (4)
55. of Bamburgh (4)
56. of Bavaria (7)
57. of Bayeux (1)
58. of Berenger (1)
59. of Bernica (1)
60. of Bramburgh (2)
61. of Bretagne (1)
62. of Brittany (1)
63. of Brotherton (1)
64. of Burgundy (6)
65. of Camulod (1)
66. of Cardigan (1)
67. of Castille (1)
68. of Cologne (1)
69. of Denmark (2)
70. of Devon (1)
71. of Dublin (1)
72. of Dunkeld (1)
73. of Durham (2)
74. of England (8)
75. of Essex (3)
76. of Fife (3)
77. of Flanders (9)
78. of Flint (3)
79. of Friesland (3)
80. of Friuli (1)
   81. of Fruili (1)
82. of Geneva (1)
83. of Gepids (1)
84. of Gorze (1)
85. of Hainaut (1)
86. of Hastings (1)
87. of Henegouwen (2)
88. of Holland (2)
89. of Huntingdon (1)
90. of Iskennen (1)
91. of Italy (3)
92. of Kent (2)
93. of Kievian Rus' (2)
94. of Kraichgau (1)
95. of Lens (1)
96. of Leuven (1)
97. of Limoges (1)
98. of Luxemburg (1)
99. of Lyubech (1)
100. of Mercia (17)
101. of Metz (5)
102. of Mumhan (2)
103. of Nordgau (3)
104. of Norfolk (1)
105. of Northumbria (2)
106. of Novgorod (3)
107. of Poland (1)
108. of Sachsen (3)
109. of Saluzzo (1)
110. of Saxony (3)
111. of Scotland (10)
112. of Shaftesbury (1)
113. of Sicambria (4)
114. of Surrey (1)
115. of Sussex (1)
116. of the Byzantine Empire (1)
117. of The East Franks (8)
118. of the Francs (1)
119. of the Franks (8)
120. of the Gepidae (1)
   121. of the Gepids (1)
122. of the Holy Roman Empire (2)
123. of the Obodrites (7)
124. of the Orkneys (1)
125. of the Ostrogoths (3)
126. of the Salian Franks (3)
127. of the Sicambrian Franks (2)
128. of The Vandals (1)
129. of the West Franks (1)
130. of Thurgau (1)
131. of Thüringia (8)
132. of Torres (1)
133. of Toulouse (1)
134. of Toxandria (1)
135. of Tréves (1)
136. of Vermandois (1)
137. of Wessex (9)
138. of Wiltshire (1)
139. of York (3)
140. Offhausen (1)
141. Ogg (1)
142. Ogle (1)
143. Ogston (1)
144. Ohlendorf (12)
145. Ohlmann (1)
146. Oitzmen (2)
147. Olafsdatter (1)
148. Olafsdotter (1)
149. Oldcastle (1)
150. Oldham (1)
151. Oleski (4)
152. Olifard (4)
153. Oliger (1)
154. Olin (1)
155. Oliphant (1)
156. Olivares (3)
157. Oliver (12)
158. Oliveros (1)
159. Ollchrothach (1)
160. Olson (6)
   161. Omike (1)
162. Oneal (1)
163. Open (1)
164. Opie (5)
165. Opitz (1)
166. Oppel (2)
167. Oppie (1)
168. Opye (2)
169. Orcutt (4)
170. Ordway (3)
171. Ormsby (3)
172. Orphal (2)
173. Orr (6)
174. Orrell (1)
175. Ortleb (3)
176. Ortlieb (12)
177. Ortlob (1)
178. Ortolph (1)
179. Ortwig (6)
180. Orwan (1)
181. Osborn (2)
182. Osbourn (1)
183. Osick (1)
184. Osten (1)
185. Oster (1)
186. Ostheimer (1)
187. Ostlund (3)
188. Osvalt (1)
189. Oswald (93)
190. Ott (3)
191. Otta (15)
192. Otten (15)
193. Otto (3)
194. Overshiner (1)
195. Overstreet (1)
196. Overton (3)
197. Owen (2)
198. Owens (10)