NameCensus.

Surnames

UK surnames beginning with O

Browse UK surnames from the 1881 census and modern surname records. Surname pages show counts, origin facts, historical distribution, maps, first-name pairings and census detail.

Browse by letter

#Surname1881 countModern count
1Owen35,55852,359
2Obrien7,79933,659
3Oliver21,33731,233
4Oneill3,27027,781
5Osborne14,20324,541
6Oconnor3,03023,629
7Odonnell3,09815,455
8Owens14,92215,316
9Osullivan50313,584
10Oakley6,3599,877
11Oreilly4258,291
12Oconnell1,3358,219
13Orr1,2137,972
14Ohara2,8097,647
15Ogden8,4837,275
16Oakes4,3367,022
17Oshea4006,698
18Oleary1,1576,221
19Osman1,0916,194
20Orourke5355,970
21Oxley4,1995,671
22Oldfield4,9405,656
23Oates4,5685,602
24Oldham5,2885,006
25Osborn6,2454,899
26Oneil5,2194,627
27Orchard3,1644,388
28Ocallaghan2324,224
29Overton2,9074,004
30Omalley5413,937
31Otoole3003,905
32Orton2,8103,794
33Ohare1,3563,726
34Omar63,704
35Ogilvie2,9063,517
36Ogrady4893,487
37Odell2,3243,357
38Orme2,5063,297
39Okeefe4973,179
40Oram2,3373,062
41Odonoghue1673,042
42Okeeffe1842,836
43Ord1,7862,804
44Odriscoll602,361
45Ogorman1372,113
46Odonovan792,104
47Owusu02,104
48Ohanlon1582,079
49Ohagan3072,061
50Ormerod2,4011,989
51Odedra01,922
52Odwyer911,890
53Olsen5571,840
54Okane1351,839
55Oliveira51,824
56Oldroyd1,5151,820
57Oshaughnessy1671,753
58Ohalloran1321,710
59Osmond1,3511,692
60Onions1,6661,662
61Omahony271,614
62Oloughlin681,573
63Osbourne1,1021,562
64Old1,1571,539
65Osei01,539
66Oregan611,536
67Openshaw1,4531,519
68Oswald1,3751,450
69Olley9771,405
70Oddy1,8421,360
71Organ1,1901,359
72Olive1,0731,293
73Omara2021,238
74Oliphant1,1701,235
75Omeara991,221
76Omahoney191,197
77Offord9481,189
78Oriordan111,188
79Ofarrell1631,187
80Ong1651,145
81Oboyle1631,139
82Ovenden8401,137
83Odowd1391,134
84Ogg2051,110
85Ogle9581,105
86Ojo01,102
87Orrell1,1171,094
88Orford7491,087
89Otter7591,058
90Oxford1,0311,037
91Omer60994
92Oflaherty116990
93Oke309975
94Oakey693973
95Orange488961
96Outram875957
97Opoku0933
98Owers668911
99Ormrod966906
100Ovens765894