List of nationalities | TXT, HTML, ARRAY | Got from https://en.wikipedia.org/wiki/Lists_of_people_by_nationality

nationalities.html

<select name="nationality">
    <option value="Afghans">Afghans</option>
    <option value="Albanians">Albanians</option>
    <option value="Algerians">Algerians</option>
    <option value="Americans">Americans</option>
    <option value="Andorrans">Andorrans</option>
    <option value="Angolans">Angolans</option>
    <option value="Antiguans and Barbudans">Antiguans and Barbudans</option>
    <option value="Argentines">Argentines</option>
    <option value="Armenians">Armenians</option>
    <option value="Arubans">Arubans</option>
    <option value="Australians">Australians</option>
    <option value="Austrians">Austrians</option>
    <option value="Azerbaijanis">Azerbaijanis</option>
    <option value="Bahamians">Bahamians</option>
    <option value="Bahrainis">Bahrainis</option>
    <option value="Bangladeshis">Bangladeshis</option>
    <option value="Barbadians">Barbadians</option>
    <option value="Basques">Basques</option>
    <option value="Belarusians">Belarusians</option>
    <option value="Belgians">Belgians</option>
    <option value="Belizeans">Belizeans</option>
    <option value="Beninese">Beninese</option>
    <option value="Bermudians">Bermudians</option>
    <option value="Bhutanese">Bhutanese</option>
    <option value="Bolivians">Bolivians</option>
    <option value="Bosniaks">Bosniaks</option>
    <option value="Bosnians and Herzegovinians">Bosnians and Herzegovinians</option>
    <option value="Botswana">Botswana</option>
    <option value="Brazilians">Brazilians</option>
    <option value="Bretons">Bretons</option>
    <option value="British">British</option>
    <option value="British Virgin Islanders">British Virgin Islanders</option>
    <option value="Bruneians">Bruneians</option>
    <option value="Bulgarians">Bulgarians</option>
    <option value="Macedonian Bulgarians">Macedonian Bulgarians</option>
    <option value="Burkinabés">Burkinabés</option>
    <option value="Burmese">Burmese</option>
    <option value="Burundians">Burundians</option>
    <option value="Cambodians">Cambodians</option>
    <option value="Cameroonians">Cameroonians</option>
    <option value="Canadians">Canadians</option>
    <option value="Catalans">Catalans</option>
    <option value="Cape Verdeans">Cape Verdeans</option>
    <option value="Chadians">Chadians</option>
    <option value="Chileans">Chileans</option>
    <option value="Chinese">Chinese</option>
    <option value="Colombians">Colombians</option>
    <option value="Comorians">Comorians</option>
    <option value="Congolese">Congolese</option>
    <option value="Costa Ricans">Costa Ricans</option>
    <option value="Croatians">Croatians</option>
    <option value="Cubans">Cubans</option>
    <option value="Cypriots">Cypriots</option>
    <option value="Czechs">Czechs</option>
    <option value="Danes">Danes</option>
    <option value="Greenlanders">Greenlanders</option>
    <option value="Djiboutians">Djiboutians</option>
    <option value="Dominicans (Commonwealth)">Dominicans (Commonwealth)</option>
    <option value="Dominicans (Republic)">Dominicans (Republic)</option>
    <option value="Dutch">Dutch</option>
    <option value="East Timorese">East Timorese</option>
    <option value="Ecuadorians">Ecuadorians</option>
    <option value="Egyptians">Egyptians</option>
    <option value="Emiratis">Emiratis</option>
    <option value="English">English</option>
    <option value="Equatoguineans">Equatoguineans</option>
    <option value="Eritreans">Eritreans</option>
    <option value="Estonians">Estonians</option>
    <option value="Ethiopians">Ethiopians</option>
    <option value="Falkland Islanders">Falkland Islanders</option>
    <option value="Faroese">Faroese</option>
    <option value="Fijians">Fijians</option>
    <option value="Finns">Finns</option>
    <option value="Finnish Swedish">Finnish Swedish</option>
    <option value="Filipinos">Filipinos</option>
    <option value="French citizens">French citizens</option>
    <option value="Gabonese">Gabonese</option>
    <option value="Gambians">Gambians</option>
    <option value="Georgians">Georgians</option>
    <option value="Germans">Germans</option>
    <option value="Baltic Germans">Baltic Germans</option>
    <option value="Ghanaians">Ghanaians</option>
    <option value="Gibraltarians">Gibraltarians</option>
    <option value="Greeks">Greeks</option>
    <option value="Greek Macedonians">Greek Macedonians</option>
    <option value="Grenadians">Grenadians</option>
    <option value="Guatemalans">Guatemalans</option>
    <option value="Guianese (French)">Guianese (French)</option>
    <option value="Guineans">Guineans</option>
    <option value="Guinea-Bissau nationals">Guinea-Bissau nationals</option>
    <option value="Guyanese">Guyanese</option>
    <option value="Haitians">Haitians</option>
    <option value="Hondurans">Hondurans</option>
    <option value="Hong Kongers">Hong Kongers</option>
    <option value="Hungarians">Hungarians</option>
    <option value="Icelanders">Icelanders</option>
    <option value="I-Kiribati">I-Kiribati</option>
    <option value="Indians">Indians</option>
    <option value="Indonesians">Indonesians</option>
    <option value="Iranians">Iranians</option>
    <option value="Iraqis">Iraqis</option>
    <option value="Irish">Irish</option>
    <option value="Israelis">Israelis</option>
    <option value="Italians">Italians</option>
    <option value="Ivoirians">Ivoirians</option>
    <option value="Jamaicans">Jamaicans</option>
    <option value="Japanese">Japanese</option>
    <option value="Jordanians">Jordanians</option>
    <option value="Kazakhs">Kazakhs</option>
    <option value="Kenyans">Kenyans</option>
    <option value="Koreans">Koreans</option>
    <option value="Kosovars">Kosovars</option>
    <option value="Kuwaitis">Kuwaitis</option>
    <option value="Kyrgyzs">Kyrgyzs</option>
    <option value="Lao">Lao</option>
    <option value="Latvians">Latvians</option>
    <option value="Lebanese">Lebanese</option>
    <option value="Liberians">Liberians</option>
    <option value="Libyans">Libyans</option>
    <option value="Liechtensteiners">Liechtensteiners</option>
    <option value="Lithuanians">Lithuanians</option>
    <option value="Luxembourgers">Luxembourgers</option>
    <option value="Macao">Macao</option>
    <option value="Macedonians">Macedonians</option>
    <option value="Malagasy">Malagasy</option>
    <option value="Malawians">Malawians</option>
    <option value="Malaysians">Malaysians</option>
    <option value="Maldivians">Maldivians</option>
    <option value="Malians">Malians</option>
    <option value="Maltese">Maltese</option>
    <option value="Manx">Manx</option>
    <option value="Marshallese">Marshallese</option>
    <option value="Mauritanians">Mauritanians</option>
    <option value="Mauritians">Mauritians</option>
    <option value="Mexicans">Mexicans</option>
    <option value="Micronesians">Micronesians</option>
    <option value="Moldovans">Moldovans</option>
    <option value="Monégasque">Monégasque</option>
    <option value="Mongolians">Mongolians</option>
    <option value="Montenegrins">Montenegrins</option>
    <option value="Moroccans">Moroccans</option>
    <option value="Mozambicans">Mozambicans</option>
    <option value="Namibians">Namibians</option>
    <option value="Naurans">Naurans</option>
    <option value="Nepalese">Nepalese</option>
    <option value="New Zealanders">New Zealanders</option>
    <option value="Nicaraguans">Nicaraguans</option>
    <option value="Nigeriens">Nigeriens</option>
    <option value="Nigerians">Nigerians</option>
    <option value="Norwegians">Norwegians</option>
    <option value="Omani">Omani</option>
    <option value="Pakistanis">Pakistanis</option>
    <option value="Palauans">Palauans</option>
    <option value="Palestinians">Palestinians</option>
    <option value="Panamanians">Panamanians</option>
    <option value="Papua New Guineans">Papua New Guineans</option>
    <option value="Paraguayans">Paraguayans</option>
    <option value="Peruvians">Peruvians</option>
    <option value="Poles">Poles</option>
    <option value="Portuguese">Portuguese</option>
    <option value="Puerto Ricans">Puerto Ricans</option>
    <option value="Qatari">Qatari</option>
    <option value="Quebecers">Quebecers</option>
    <option value="Réunionnais">Réunionnais</option>
    <option value="Romanians">Romanians</option>
    <option value="Russians">Russians</option>
    <option value="Baltic Russians">Baltic Russians</option>
    <option value="Rwandans">Rwandans</option>
    <option value="Saint Kitts and Nevis">Saint Kitts and Nevis</option>
    <option value="Saint Lucians">Saint Lucians</option>
    <option value="Salvadorans">Salvadorans</option>
    <option value="Sammarinese">Sammarinese</option>
    <option value="Samoans">Samoans</option>
    <option value="São Tomé and Príncipe">São Tomé and Príncipe</option>
    <option value="Saudis">Saudis</option>
    <option value="Scots">Scots</option>
    <option value="Senegalese">Senegalese</option>
    <option value="Serbs">Serbs</option>
    <option value="Seychellois">Seychellois</option>
    <option value="Sierra Leoneans">Sierra Leoneans</option>
    <option value="Singaporeans">Singaporeans</option>
    <option value="Slovaks">Slovaks</option>
    <option value="Slovenes">Slovenes</option>
    <option value="Solomon Islanders">Solomon Islanders</option>
    <option value="Somalis">Somalis</option>
    <option value="Somalilanders">Somalilanders</option>
    <option value="Sotho">Sotho</option>
    <option value="South Africans">South Africans</option>
    <option value="Spaniards">Spaniards</option>
    <option value="Sri Lankans">Sri Lankans</option>
    <option value="Sudanese">Sudanese</option>
    <option value="Surinamese">Surinamese</option>
    <option value="Swazi">Swazi</option>
    <option value="Swedes">Swedes</option>
    <option value="Swiss">Swiss</option>
    <option value="Syriacs">Syriacs</option>
    <option value="Syrians">Syrians</option>
    <option value="Taiwanese">Taiwanese</option>
    <option value="Tamils">Tamils</option>
    <option value="Tajik">Tajik</option>
    <option value="Tanzanians">Tanzanians</option>
    <option value="Thais">Thais</option>
    <option value="Tibetans">Tibetans</option>
    <option value="Tobagonians">Tobagonians</option>
    <option value="Togolese">Togolese</option>
    <option value="Tongans">Tongans</option>
    <option value="Trinidadians">Trinidadians</option>
    <option value="Tunisians">Tunisians</option>
    <option value="Turks">Turks</option>
    <option value="Tuvaluans">Tuvaluans</option>
    <option value="Ugandans">Ugandans</option>
    <option value="Ukrainians">Ukrainians</option>
    <option value="Uruguayans">Uruguayans</option>
    <option value="Uzbeks">Uzbeks</option>
    <option value="Vanuatuans">Vanuatuans</option>
    <option value="Venezuelans">Venezuelans</option>
    <option value="Vietnamese">Vietnamese</option>
    <option value="Vincentians">Vincentians</option>
    <option value="Welsh">Welsh</option>
    <option value="Yemenis">Yemenis</option>
    <option value="Zambians">Zambians</option>
    <option value="Zimbabweans">Zimbabweans</option>
</select>

nationalities.js

var nationalities = ['Afghans', 'Albanians', 'Algerians', 'Americans', 'Andorrans', 'Angolans', 'Antiguans and Barbudans', 'Argentines', 'Armenians', 'Arubans', 'Australians', 'Austrians', 'Azerbaijanis', 'Bahamians', 'Bahrainis', 'Bangladeshis', 'Barbadians', 'Basques', 'Belarusians', 'Belgians', 'Belizeans', 'Beninese', 'Bermudians', 'Bhutanese', 'Bolivians', 'Bosniaks', 'Bosnians and Herzegovinians', 'Botswana', 'Brazilians', 'Bretons', 'British', 'British Virgin Islanders', 'Bruneians', 'Bulgarians', 'Macedonian Bulgarians', 'Burkinabés', 'Burmese', 'Burundians', 'Cambodians', 'Cameroonians', 'Canadians', 'Catalans', 'Cape Verdeans', 'Chadians', 'Chileans', 'Chinese', 'Colombians', 'Comorians', 'Congolese', 'Costa Ricans', 'Croatians', 'Cubans', 'Cypriots', 'Czechs', 'Danes', 'Greenlanders', 'Djiboutians', 'Dominicans (Commonwealth)', 'Dominicans (Republic)', 'Dutch', 'East Timorese', 'Ecuadorians', 'Egyptians', 'Emiratis', 'English', 'Equatoguineans', 'Eritreans', 'Estonians', 'Ethiopians', 'Falkland Islanders', 'Faroese', 'Fijians', 'Finns', 'Finnish Swedish', 'Filipinos', 'French citizens', 'Gabonese', 'Gambians', 'Georgians', 'Germans', 'Baltic Germans', 'Ghanaians', 'Gibraltarians', 'Greeks', 'Greek Macedonians', 'Grenadians', 'Guatemalans', 'Guianese (French)', 'Guineans', 'Guinea-Bissau nationals', 'Guyanese', 'Haitians', 'Hondurans', 'Hong Kongers', 'Hungarians', 'Icelanders', 'I-Kiribati', 'Indians', 'Indonesians', 'Iranians', 'Iraqis', 'Irish', 'Israelis', 'Italians', 'Ivoirians', 'Jamaicans', 'Japanese', 'Jordanians', 'Kazakhs', 'Kenyans', 'Koreans', 'Kosovars', 'Kuwaitis', 'Kyrgyzs', 'Lao', 'Latvians', 'Lebanese', 'Liberians', 'Libyans', 'Liechtensteiners', 'Lithuanians', 'Luxembourgers', 'Macao', 'Macedonians', 'Malagasy', 'Malawians', 'Malaysians', 'Maldivians', 'Malians', 'Maltese', 'Manx', 'Marshallese', 'Mauritanians', 'Mauritians', 'Mexicans', 'Micronesians', 'Moldovans', 'Monégasque', 'Mongolians', 'Montenegrins', 'Moroccans', 'Mozambicans', 'Namibians', 'Naurans', 'Nepalese', 'New Zealanders', 'Nicaraguans', 'Nigeriens', 'Nigerians', 'Norwegians', 'Omani', 'Pakistanis', 'Palauans', 'Palestinians', 'Panamanians', 'Papua New Guineans', 'Paraguayans', 'Peruvians', 'Poles', 'Portuguese', 'Puerto Ricans', 'Qatari', 'Quebecers', 'Réunionnais', 'Romanians', 'Russians', 'Baltic Russians', 'Rwandans', 'Saint Kitts and Nevis', 'Saint Lucians', 'Salvadorans', 'Sammarinese', 'Samoans', 'São Tomé and Príncipe', 'Saudis', 'Scots', 'Senegalese', 'Serbs', 'Seychellois', 'Sierra Leoneans', 'Singaporeans', 'Slovaks', 'Slovenes', 'Solomon Islanders', 'Somalis', 'Somalilanders', 'Sotho', 'South Africans', 'Spaniards', 'Sri Lankans', 'Sudanese', 'Surinamese', 'Swazi', 'Swedes', 'Swiss', 'Syriacs', 'Syrians', 'Taiwanese', 'Tamils', 'Tajik', 'Tanzanians', 'Thais', 'Tibetans', 'Tobagonians', 'Togolese', 'Tongans', 'Trinidadians', 'Tunisians', 'Turks', 'Tuvaluans', 'Ugandans', 'Ukrainians', 'Uruguayans', 'Uzbeks', 'Vanuatuans', 'Venezuelans', 'Vietnamese', 'Vincentians', 'Welsh', 'Yemenis', 'Zambians', 'Zimbabweans']

nationalities.txt

Got from https://en.wikipedia.org/wiki/Lists_of_people_by_nationality:

Afghans
Albanians
Algerians
Americans
Andorrans
Angolans
Antiguans and Barbudans
Argentines
Armenians
Arubans
Australians
Austrians
Azerbaijanis
Bahamians
Bahrainis
Bangladeshis
Barbadians
Basques
Belarusians
Belgians
Belizeans
Beninese
Bermudians
Bhutanese
Bolivians
Bosniaks
Bosnians and Herzegovinians
Botswana
Brazilians
Bretons
British
British Virgin Islanders
Bruneians
Bulgarians
Macedonian Bulgarians
Burkinabés
Burmese
Burundians
Cambodians
Cameroonians
Canadians
Catalans
Cape Verdeans
Chadians
Chileans
Chinese
Colombians
Comorians
Congolese
Costa Ricans
Croatians
Cubans
Cypriots
Czechs
Danes
Greenlanders
Djiboutians
Dominicans (Commonwealth)
Dominicans (Republic)
Dutch
East Timorese
Ecuadorians
Egyptians
Emiratis
English
Equatoguineans
Eritreans
Estonians
Ethiopians
Falkland Islanders
Faroese
Fijians
Finns
Finnish Swedish
Filipinos
French citizens
Gabonese
Gambians
Georgians
Germans
Baltic Germans
Ghanaians
Gibraltarians
Greeks
Greek Macedonians
Grenadians
Guatemalans
Guianese (French)
Guineans
Guinea-Bissau nationals
Guyanese
Haitians
Hondurans
Hong Kongers
Hungarians
Icelanders
I-Kiribati
Indians
Indonesians
Iranians
Iraqis
Irish
Israelis
Italians
Ivoirians
Jamaicans
Japanese
Jordanians
Kazakhs
Kenyans
Koreans
Kosovars
Kuwaitis
Kyrgyzs
Lao
Latvians
Lebanese
Liberians
Libyans
Liechtensteiners
Lithuanians
Luxembourgers
Macao
Macedonians
Malagasy
Malawians
Malaysians
Maldivians
Malians
Maltese
Manx
Marshallese
Mauritanians
Mauritians
Mexicans
Micronesians
Moldovans
Monégasque
Mongolians
Montenegrins
Moroccans
Mozambicans
Namibians
Naurans
Nepalese
New Zealanders
Nicaraguans
Nigeriens
Nigerians
Norwegians
Omani
Pakistanis
Palauans
Palestinians
Panamanians
Papua New Guineans
Paraguayans
Peruvians
Poles
Portuguese
Puerto Ricans
Qatari
Quebecers
Réunionnais
Romanians
Russians
Baltic Russians
Rwandans
Saint Kitts and Nevis
Saint Lucians
Salvadorans
Sammarinese
Samoans
São Tomé and Príncipe
Saudis
Scots
Senegalese
Serbs
Seychellois
Sierra Leoneans
Singaporeans
Slovaks
Slovenes
Solomon Islanders
Somalis
Somalilanders
Sotho
South Africans
Spaniards
Sri Lankans
Sudanese
Surinamese
Swazi
Swedes
Swiss
Syriacs
Syrians
Taiwanese
Tamils
Tajik
Tanzanians
Thais
Tibetans
Tobagonians
Togolese
Tongans
Trinidadians
Tunisians
Turks
Tuvaluans
Ugandans
Ukrainians
Uruguayans
Uzbeks
Vanuatuans
Venezuelans
Vietnamese
Vincentians
Welsh
Yemenis
Zambians
Zimbabweans