Family names that begin with the letter O

There are a total of 4,988,732 people from 106 countries with surnames that start with the letter O. Click a link below that corresponds to the first three letters of the last name you are searching for.

People by Country

The list below shows the total number of people by country for all names (last names/surnames/family names) starting with the letter O, sorted by the number of people in descending order.

Flag of Kenya Kenya 3,499
Flag of Austria Austria 1,311
Flag of Dominican Republic Dominican Republic 710
Flag of Hungary Hungary 634
Flag of Kazakhstan Kazakhstan 499
Flag of Estonia Estonia 421
Flag of Pakistan Pakistan 388
Flag of Guatemala Guatemala 384
Flag of Slovenia Slovenia 336
Flag of Latvia Latvia 292
Flag of Bangladesh Bangladesh 260
Flag of Cyprus Cyprus 257
Flag of Algeria Algeria 245
Flag of Uruguay Uruguay 231
Flag of Paraguay Paraguay 198
Flag of Ivory Coast Ivory Coast 198
Flag of Honduras Honduras 195
Flag of Luxembourg Luxembourg 120
Flag of Cameroon Cameroon 111
Flag of Tanzania Tanzania 109
Flag of Belize Belize 103
Flag of Benin Benin 102
Flag of Senegal Senegal 98
Flag of Lithuania Lithuania 95
Flag of Saint Lucia Saint Lucia 75
Flag of Congo Congo 69
Flag of Nepal Nepal 60
Flag of Saint Vincent and The Grenadines Saint Vincent and The Grenadines 59
Flag of Grenada Grenada 57
Flag of Somalia Somalia 56
Flag of Saint Kitts and Nevis Saint Kitts and Nevis 54
Flag of Kyrgyzstan Kyrgyzstan 46
Flag of Uzbekistan Uzbekistan 44
Flag of Yemen Yemen 41
Flag of Reunion Reunion 40
Flag of Aruba Aruba 38
Flag of Angola Angola 37
Flag of Togo Togo 35
Flag of Niger Niger 35
Flag of Botswana Botswana 33
Flag of United States Minor Outlying Islands United States Minor Outlying Islands 29
Flag of Mali Mali 28
Flag of Anguilla Anguilla 27
Flag of Montserrat Montserrat 26
Flag of Liechtenstein Liechtenstein 25
Flag of Turkmenistan Turkmenistan 23
Flag of Seychelles Seychelles 23
Flag of Haiti Haiti 20
Flag of Rwanda Rwanda 19
Flag of Mozambique Mozambique 18
Flag of Faroe Islands Faroe Islands 17
Flag of Zambia Zambia 16
Flag of Netherlands Antilles Netherlands Antilles 16
Flag of Swaziland Swaziland 15
Flag of Madagascar Madagascar 15
Flag of Laos Laos 15
Flag of Papua New Guinea Papua New Guinea 14
Flag of Guam Guam 14
Flag of French Polynesia French Polynesia 13
Flag of American Samoa American Samoa 13
Flag of Sierra Leone Sierra Leone 12
Flag of Guinea Guinea 12
Flag of Gambia Gambia 12
Flag of Guyana Guyana 10
Flag of Cuba Cuba 10
Flag of Antigua and Barbuda Antigua and Barbuda 10
Flag of Malawi Malawi 9
Flag of Liberia Liberia 9
Flag of Ethiopia Ethiopia 9
Flag of Tajikistan Tajikistan 8
Flag of San Marino San Marino 8
Flag of Northern Mariana Islands Northern Mariana Islands 8
Flag of French Guiana French Guiana 8
Flag of Fiji Islands Fiji Islands 8
Flag of Eritrea Eritrea 8
Flag of Djibouti Djibouti 8
Flag of Burundi Burundi 8
Flag of Maldives Maldives 6
Flag of Equatorial Guinea Equatorial Guinea 6
Flag of Cape Verde Cape Verde 6
Flag of Solomon Islands Solomon Islands 5
Flag of Serbia Serbia 5
Flag of Central African Republic Central African Republic 5
Flag of Tonga Tonga 4
Flag of Chad Chad 4
Flag of Niue Niue 4
Flag of Bhutan Bhutan 4
Flag of Mayotte Mayotte 3
Flag of East Timor East Timor 3
Flag of Kiribati Kiribati 3
Flag of Tuvalu Tuvalu 2
Flag of Syria Syria 2
Flag of Nauru Nauru 2
Flag of Marshall Islands Marshall Islands 2
Flag of Lesotho Lesotho 2
Flag of Cook Islands Cook Islands 2
Flag of Samoa Samoa 1
Flag of Sao Tome and Principe Sao Tome and Principe 1
Flag of Slovakia Slovakia 1
Flag of Palau Palau 1
Flag of Pitcairn Islands Pitcairn Islands 1
Flag of Montenegro Montenegro 1
Flag of North Korea North Korea 1
Flag of Micronesia Micronesia 1
Flag of Western Sahara Western Sahara 1
Flag of Antarctica Antarctica 1