Surname List: Begins with O


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

1. Of Angus (1)
2. Of Burgundy (1)
3. Of Cornwal (1)
4. of Lithuania (1)
5. O Carrol Ó Cearbhaill (1)
6. Ó Mórdha (4)
7. Ó Mórdha, (3)
8. Ó Néill (2)
9. O' Connor (1)
10. O' Tuathail (1)
11. O'Balbhan (1)
12. O'Braenain (2)
13. O'Brayan (1)
14. O'Brian (3)
15. O'Brien (12)
16. O'Bryan (22)
17. O'Carroll (9)
18. O'Cathain (1)
19. O'Connell (1)
20. O'Connor (1)
21. O'Conor (1)
22. O'Daniel (21)
23. O'Domnail (2)
24. O'Donnell (2)
25. O'Donovan (1)
26. O'Dunlainge (1)
27. O'Farrell (1)
28. O'Gairbita (1)
29. O'Hara (2)
30. O'Lafferty (1)
31. O'Leary (17)
32. O'Madden (1)
33. O'Mattieo (1)
34. O'Molloy (1)
35. O'Morda (1)
36. O'Nan (1)
37. O'Neal (1)
38. O'Neil (3)
39. O'Neill (13)
40. O'Nolan (1)
41. O'Reilly (4)
42. O'Sullivan (1)
43. O'Tuathail (1)
44. O. Tuathail (2)
45. Oberst (5)
46. Obrian (1)
47. Obryan (1)
48. Ockol (1)
49. Ocley (1)
50. Odaniel (6)
51. Oddingseles (3)
52. Oddsson (1)
53. Odingsell (1)
54. Odingsells (1)
55. Odle (1)
56. Oechslin (1)
   57. Of Acre (1)
58. of Alburquerque (1)
59. of Antwerp (1)
60. of Aquitaine (1)
61. of Aragon (2)
62. of Arnesberg (1)
63. of Atholl (1)
64. of Baux (1)
65. Of Bavaria (1)
66. Of Blithfield (1)
67. Of Bohemia And Hungary (1)
68. of Boulogne (1)
69. of Bramshall (1)
70. of Brereton (1)
71. of Brieg (1)
72. of Brittany (1)
73. of Brotherton (1)
74. of Brzeg (1)
75. of Buchan (1)
76. of Calder (1)
77. Of Cambridge (1)
78. of Castile (2)
79. of Conisbrough (1)
80. Of Cornwall (2)
81. of Corticella (1)
82. Of Crostwick (1)
83. Of Cyfeiliog (1)
84. of Dennis (1)
85. Of Devon (1)
86. of Dietz (1)
87. Of Dunbar (1)
88. Of Durham (1)
89. of Edgar (1)
90. of England (2)
91. of Flanders (1)
92. of France (1)
93. of Gloucester (2)
94. of Habsburg (1)
95. of Holland (1)
96. of Holstein-Rendsburg (1)
97. of Hungary (1)
98. of Lancaster (2)
99. Of Langfield (2)
100. of Langley (1)
101. Of Lennox (2)
102. of Leslie (1)
103. of Lincolnshire (1)
104. of Lorraine-Vaudémont (1)
105. of Mar (1)
106. of Marr (1)
107. of Meissen (1)
108. of Mercia (1)
109. Of Metz (1)
110. Of Monmouth (2)
111. Of Naples (1)
112. of Navarre (1)
   113. of Norfolk (1)
114. Of Northumbria (3)
115. of Norwich (1)
116. of Ogistoune (1)
117. of Ogistun (1)
118. of Paris (1)
119. Of Poland (1)
120. Of Portugal (1)
121. of Provence (2)
122. Of Radcliffe (1)
123. Of Rhuddlan (1)
124. Of Rosslyn (1)
125. of Salisbury (1)
126. Of Saluzzo, (1)
127. of Savoie (1)
128. of Savoy (1)
129. of Saxe-Wittenberg (2)
130. of Scotland (1)
131. Of Sicily (2)
132. Of Standon (1)
133. of Strathbogie (1)
134. of Sulichgau (1)
135. of Syndenham (1)
136. of Verdun (1)
137. of Vienne (1)
138. of Viennois (1)
139. of Woodstock (1)
140. of Wurttemburg (1)
141. Of Yester (1)
142. of York (1)
143. of Yorkshire (1)
144. Offing (2)
145. Offley (3)
146. Offyn (1)
147. Ogard (1)
148. Ogden (3)
149. Ogg (1)
150. Ogilvey (1)
151. Ogilvie (5)
152. Ogilvie of Lintrathen (1)
153. Ogilvy (16)
154. Ogilvy Of Auchterhouse (2)
155. Ogle (3)
156. Oglesby (1)
157. Oglethorpe (4)
158. Oglivie (1)
159. Ogstoun (2)
160. Ohlsson (1)
161. Ohningen (2)
162. Oiler (1)
163. Okeefe (1)
164. Olafsdotter (1)
165. Olafsdottir (1)
166. Olafsson (2)
167. Olai Gestricus Niurenius (1)
168. Oldcastle (4)
   169. Oldefylde (2)
170. Oldenburg (3)
171. Oldfield (2)
172. Oldhall (2)
173. Oldham (12)
174. Oldham, (3)
175. Oliphant (13)
176. Oliphant of Aberdalgie (1)
177. Oliphant of Aberdalgir and Kellie (1)
178. Olive (1)
179. Oliver (27)
180. Ollerenshaw (2)
181. Olliver (1)
182. Ollsson (1)
183. Ollyver (4)
184. Olmstead (5)
185. Olney (1)
186. Olofsdotter (8)
187. Olofsdotter Löja Beronis (1)
188. Olofsson (8)
189. Olofsson Bure (4)
190. Olofsson Burman (1)
191. Olovsdotter (1)
192. Olovsson Bure (1)
193. Olsdotter (1)
194. Olsen (2)
195. Olsen Lijnumval (1)
196. Olseth (2)
197. Olson (3)
198. Olsson (2)
199. Olufsdatter (1)
200. Olufsdatter Lunge (1)
201. Olufsdotter (1)
202. Olufsen (1)
203. Olufsson (2)
204. Olven (1)
205. Onedeby (1)
206. Onelye (1)
207. Onischak (1)
208. Onley (2)
209. Op den Graeff (1)
210. Orchard (1)
211. Orcutt (1)
212. Orde (2)
213. Ore (1)
214. Orgill (1)
215. Örjansdotter (1)
216. Orleans (4)
217. Orm (2)
218. Ormesby (1)
219. Ormeston (6)
220. Ormsdotter (1)
221. Ormsson (1)
222. Orpewood (2)
223. Orr (2)
224. Orreby (1)
   225. Orrell (5)
226. Orsini (2)
227. Orton (1)
228. Orvis (9)
229. Orvitt (1)
230. Osbaldeston (1)
231. Osbert (1)
232. Osborn (6)
233. Osborne (13)
234. Osborne Ray (1)
235. Osbourne (4)
236. Osbyrn (1)
237. Oseth (1)
238. Osgood (5)
239. Osorio Y. Bazán (1)
240. Osorio Y. Pimentel de Villafranca del Bi (1)
241. Osraige (1)
242. Ossory (4)
243. Oster (2)
244. Oswald (4)
245. Oteley (4)
246. Otis (1)
247. Otley (3)
248. Ott (22)
249. Otte (4)
250. Otten (1)
251. Ottirburn (2)
252. Ottley (1)
253. Ouchterlony-Auchterlonie (2)
254. Oudart (1)
255. Oudtshoorn (1)
256. Ouldham (2)
257. Outram (6)
258. Ovendon (1)
259. Over De Vecht Van Vliet (1)
260. Overall (2)
261. Overfield (1)
262. Overholt (2)
263. Overton (3)
264. Overture (1)
265. Owain (2)
266. Owain Glendower (1)
267. Owen (5)
268. Owens (3)
269. Oxenbridge (6)
270. Oxenstierna (2)
271. Oxford (1)
272. Oxnam (2)
273. Oxton (1)
274. Ozbourne (1)
275. O’ Connor (1)
276. O’brien (1)