O' Neill Name Origin, Meaning and Family History

Discover how your O' Neill ancestors earned their living and spread across the country. Find out more about your family history by using the Free Search box.

Surname Distribution

Census frequency by county

Name Concentrations Within England and Wales

O' Neill Surname Statistics


O' Neill Surname Variants Ranking

Rank Surname Match Census Frequency
1 O Brien 38% 4,889
2 O Neill 88% 2,288
3 O Connor 13% 2,195
4 O Neil 75% 2,053
5 O Donnell 44% 1,424
6 O Hara 25% 1,225
7 O Brian 38% 1,034
8 O Connell 44% 829
9 O' Brien 50% 734
10 O Hare 25% 666
11 O Leary 38% 566
12 O Neal 63% 407
13 O Niel 63% 386
14 O Conner 13% 382
15 O' Neill 100% 368
16 O Sullivan 20% 300
17 O Shea 25% 299
18 O Malley 25% 296
19 O Reilly 63% 286
20 O' Connor 33% 277
21 O Grady 25% 249
22 O' Hara 38% 249
23 O' Neil 88% 249
24 O Rourke 13% 228
25 O Bryan 25% 223
26 O Keefe 38% 214
27 O' Donnell 60% 206
28 O Toole 38% 180
29 O Donald 25% 163
30 O Keeffe 25% 150
31 O Donoghue 20% 140
32 O' Brian 50% 130
33 O Niell 63% 128
34 O' Connell 60% 128
35 O Callaghan 18% 123
36 O Dell 63% 115
37 O Boyle 38% 114
38 O Hanlon 25% 111
39 Owe 25% 105
40 O' Leary 50% 104
41 O Hagan 25% 100

Did you know?

The surname O' Neill is the 15th most popular variant of O Brien.

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