| Ethnicity | Language | Primary homeland | Subgroups, tribes & castes | Religion |
| Achagua | Arawakan → Upper Amazon Arawakan → Achagua | Colombia, Venezuela | Támara, Nunchía, Yopal, Tauramena, Recetor, Chámeza, Paya, Labranzagrande | Traditional religion, Christianity → Catholicism |
| Aché | Tupian → Guarani → Aché | Paraguay | Cerro Moroti, Ypetimi, Puerto Barra, Chupa Pou, Kuetuvy, Arroyo Bandera | Native American religion |
| Achuar | Chicham → Achuar | Peru, Ecuador | Huasaga | Christianity, Shamanism, Animism |
| Afro-Argentines | Indo-European → Romance → Spanish → Rioplatense Spanish | Argentina | | Christianity → Catholicism |
| Afro-Brazilians | Indo-European → Romance → Portuguese → Brazilian Portuguese, Cafundó | Brazil | | Christianity → Catholicism |
| Afro-Bolivians | Indo-European → Romance → Spanish → Bolivian Spanish | Bolivia | | Christianity → Catholicism |
| Afro-Chileans | Indo-European → Romance → Spanish → Chilean Spanish | Chile | | Christianity → Catholicism |
| Afro-Colombians | Indo-European → Romance → Spanish → Colombian Spanish; Indo-European → Spanish-based creole → Palenquero; Indo-European → English-based creole → San Andres-Providencia Creole | Colombia | Palenques, Raizals | Christianity → Catholicism |
| Afro-Ecuadorians | Various African languages → Forced loss of languages due to slavery in the Americas Spanish | Ecuador | | Christianity → Catholicism |
| Afro-Guyanese | Various African languages → Forced loss of languages due to slavery in the Americas English → Guyanese Creole | Guyana | | Christianity → Catholicism; Protestantism → Anglicanism, Methodism, Calvinism, Baptist, etc; Afro-American religions; Traditional African religions; Islam; Rastafari; Comfa |
| Afro-Paraguayans | Various African languages → Forced loss of languages due to slavery in the Americas Spanish | Paraguay | | Christianity → Catholicism |
| Afro-Peruvians | Various African languages → Forced loss of languages due to slavery in the Americas Spanish | Peru | | Christianity → Catholicism, Protestantism; Buddhism; Animism, etc |
| Afro-Surinamese | Various African languages → Forced loss of languages due to slavery in the Americas Dutch English → Sranan Tongo, Aukan, Kwinti English + Portuguese → Saramaccan | Suriname | | Christianity, Winti |
| Afro-Uruguayans | Various African languages → Forced loss of languages due to slavery in the Americas Spanish → Rioplatense Spanish Spanish + Portuguese → Portuñol | Uruguay | | Christianity → Catholicism, Protestantism; etc |
| Afro-Venezuelans | Various African languages → Forced loss of languages due to slavery in the Americas Spanish | Venezuela | | Christianity → Catholicism, Protestantism; Birongo; Cult to María Lionza |
| Aguaruna | Chicham → Aguaruna | Peru | Yutupiza, Japaime | Christianity, Shamanism, Animism |
| Aikana | Aikana language | Brazil | Tubarão-Latundê, Vilhena | Animism |
| Apanyekra | Macro-Je → Je → Canela | Brazil | | Ethnic religion |
| Apinajé | Macro-Je → Je → Apinayé | Brazil | | Animism |
| Atacama | Kunza | Chile, Argentina, Bolivia | | Inca Religion |
| Awa | Barbacoan → Awan → Awa | Colombia, Ecuador | | Christianity |
| Aymara | Aymaran → Aymara | Bolivia, Peru, Chile | | Christianity → Catholicism |
| Baniwa | Arawakan → Upper Amazon Arawakan → Karu | Brazil, Colombia, Venezuela | | Traditional religion; Christianity → Catholicism |
| Boeroes | Indo-European → Germanic → Dutch → Surinaams | Suriname | | Christianity |
| Bororo | Macro-Je → Bororoan → Bororo | Brazil | | Animism |
| Cabiyari | Arawakan → Upper Amazon Arawakan → Cabiyari | Colombia | | Christianity |
| Caquetio | Arawakan → Ta-Arawakan → Caquetio | Venezuela, formerly Aruba, Curaçao, Bonaire | | Native American religion |
| Chachi | Barbacoan → Chaʼpalaa | Ecuador | | Christianity → Catholicism, Native American religion |
| Charrúa | Charruan languages | Uruguay | Chaná | Animism |
| Chiquitano | Macro-Jê → Chiquitano | Bolivia, Brazil | Tao, Miñoco, Manasi | Christianity → Catholicism; Traditional Religion |
| Cinta Larga | Tupian → Monde → Cinta Larga | Brazil | | Indigenous religion, Santo Daime |
| Cofan | Cofan language | Ecuador, Colombia | | Animism |
| Embera | Choco → Embera | Colombia, Panama | | Shamanism |
| Ese Ejja | Tacanan → Ese Ejja | Bolivia, Peru | | Christianity → Catholicism; Traditional Religion |
| Falkland Islanders | Indo-European → Germanic → English → Falkland Islands English | British Overseas Territories | | Christianity |
| Gaviao (Je) | Macro-Je → Je → Para Gaviao → Parkateje, Macro-Je → Je → Para Gaviao → Pykobje | Brazil | Parkateje, Pykobje | Animism |
| Gaviao (Rondonia) | Tupian → Monde → Gavião of Jiparaná | Brazil | | Animism |
| Guajajara | Tupian → Tenetehara | Brazil | | Shamanism, Santo Daime |
| Guarani | Tupian → Guarani | Paraguay, Argentina, Bolivia | Chiriguanos | Christianity → Catholicism |
| Guarayos | Tupian → Tupi-Guarani → Guarayu-Sirionó → Guarayo | Bolivia, Paraguay | | Traditional religion, Christianity → Catholicism |
| Hispanic Americans | Indo-European → Romance → Spanish → American Spanish | Hispanic South America | Colombian, Argentinian, Peruvian, Hispanic Venezuelans, Chilean, Ecuadorian, Bolivian, Paraguayan, Uruguayans, along with significant populations in the United States, Spain, France, Canada, Italy, Japan, Germany, United Kingdom, Portugal, Australia and Sweden | Christianity → Catholicism |
| Huambisa | Chicham → Huambisa | Peru, Ecuador | | Christianity, Shamanism, Animism |
| Hunsrikers | Indo-European → Germanic → Hunsrik | Brazil | | Christianity → Catholicism, Protestantism |
| Indo-Caribbeans | Indo-European → Germanic → English → English Creole; Indo-European → Germanic → Dutch → Surinamese Dutch; Indo-European → Romance → Portuguese → Papiamento; Indo-European → Indo-Aryan → Hindustani → Caribbean Hindustani; Dravidian → Tamiloid → Tamil | Guyana, Suriname | Indo-Guyanese, Indo-Surinamese, with significant populations in the United States and the United Kingdom | Hinduism, Christianity, Islam, Sikhism, Jainism, Buddhism, Zoroastrianism, Baháʼí |
| Kaingang | Macro-Je → Je → Kaingang | Brazil | | Shamanism |
| Kamentsa | Camsa language | Colombia | | Christianity |
| Kawesqar | Alacalufan → Kawesqar | Chile | | Christianity → Protestantism |
| Kayapo | Macro-Je → Je → Kayapo | Brazil | | Animism |
| Kiriri | Indo-European → Romance → Portuguese → Brazilian Portuguese; formerly Macro-Jê → Kariri | Brazil | | Toré religion |
| Kraho | Macro-Je → Je → Kraho | Brazil | | Animism |
| Kwinti | Indo-European → English Creole → Kwinti | Suriname | | Christianity → Moravian Church |
| Luso-Brazilians | Indo-European → Romance → Portuguese → Brazilian Portuguese | Portuguese America | North Brazilians, Northeast Brazilians, Central-West Brazilians, Southeast Brazilians, South Brazilians, along with significant populations in the United States, Portugal, Paraguay, United Kingdom, Japan, Italy, Spain, Germany, Canada, Argentina, France, Switzerland, French Guiana, Australia, Ireland, Mexico, Uruguay, Belgium, Bolivia, Netherlands, and Suriname | Christianity → Catholicism |
| Macushi | Cariban → Macushi | Guyana, Brazil | | Shamanism |
| Mapuche | Araucanian languages | Chile, Argentina | Huilliche, Moluche, Pehuenche | Christianity, Mapuche religion |
| Matawai | Indo-European → Germanic → English → Saramaccan | Suriname | | Christianity → Moravian Church |
| Mennonites | Indo-European → Germanic → German, Dutch; Romance → Spanish | South America | Significant populations in Argentina, Bolivia, Colombia, Paraguay, Peru, and Uruguay | Christianity → Anabaptism → Mennonitism |
| Misak | Barbacoan → Northern Barbacoan → Coconucan → Nam Trik | Colombia | | Traditional religion, Christianity → Catholicism |
| Muiscas | Chibchan → Chibcha | Colombia | | Muisca religion, Christianity → Catholicism |
| Mojeños | Arawakan → Southern → Bolivia-Parana → Moxo languages | Bolivia | Mojeño-Trinitarios, Mojeño-Loretano, Mojeño-Javerianos, Mojeño-Ignacianos | Traditional religion, Christianity → Catholicism |
| Paramaccan | Indo-European → Germanic → English → Ndyuka | Suriname | | Winti |
| Pardo | Indo-European → Romance → Portuguese | Brazil | | Christianity → Catholicism |
| Pataxó | Macro-Jê → Maxakalian → Pataxó | Brazil | | Shamanism |
| Piapoco | Arawakan → Upper Amazon Arawakan → Piapoco | Colombia, Venezuela | | Traditional religion, Christianity → Catholicism |
| Potiguara | Tupian → Potiguara' Indo-European → Romance → Portuguese | Brazil | | Shamanism |
| Quechua | Quechuan | Peru, Bolivia, Ecuador, Colombia, Argentina | Ayacucho, Cajamarca–Canaris, Central, Chachapoyas, Cusco, Inga, Huanca, Kichwa, Lamas, North Bolivian, Pacaraos, Puno, Santiagueno, South Bolivian | Christianity → Catholicism, Inca religion |
| Qulla | Quechuan → Quechua II → Southern Quechua | Qullaw | | Christianity → Catholicism |
| Ramkokamekra | Macro-Je → Je → Canela | Brazil | | Animism |
| Ranquel | Araucanian → Mapudungun → Ranquel | Argentina | | Native American religion |
| Saramaka | Indo-European → Germanic → English → Saramaccan | Suriname | | Winti, Christianity → Moravian Church |
| Selk'nam | Chonan → Selk'nam, Indo-European → Romance → Spanish | Tierra del Fuego | | Animism, Christianity |
| Shiriana | Arawakan → Shiriana, Arutani language | Brazil, Venezuela | Auake | Animism |
| Shuar | Chicham → Shuar | Peru, Ecuador | | Christianity, Shamanism, Animism |
| Siona | Tucanoan → Western Tucanoan → Siona | Ecuador, Colombia | | Animism |
| Tapayuna | Macro-Jê → Jê → Tapayuna | Brazil | | Ethnoreligion |
| Tehuelche | Chonan → Tehuelche, Araucanian → Mapudungun, Indo-European → Romance → Spanish | Argentina | | Animism, Christianity |
| Terena | Arawakan → Terena; Brazilian Sign language; Terena Sign language | Brazil | | Shamanism |
| Ticuna | Ticuna–Yuri → Ticuna | Brazil | | Shamanism |
| Trumai | Trumai | Brazil | | Animism |
| Tsimané | Macro-Panoan → Moseten–Chonan → Tsimané | Bolivia | Mosetén | Traditional tribal religion |
| Uru | Uru-Chipaya → Uru; Aymaran → Aymara | Bolivia, Peru | | Christianity → Catholicism; Traditional Religion |
| Wayuu | Arawakan → Wayuunaiki | Colombia, Venezuela | | Ethnic religion, Christianity → Catholicism |
| Wichí | Matacoan → Wichí-Chorote → Wichí languages | Argentina, Bolivia | Vejoz, Güisnay, Nocten | |
| Xavante | Macro-Je → Je → Xavante | Brazil | | Shamanism |
| Xerente | Macro-Je → Je → Xerente | Brazil | | Christianity and traditional folk religion → Folk Catholicism |
| Xokleng | Macro-Je → Je → Xokleng | Brazil | | Shamanism |
| Yahgan | Yahgan; Indo-European → Romance → Spanish | Tierra del Fuego | | Christianity → Protestantism |
| Yanomami | Yanomaman | Southeastern Venezuela, and northern Brazil | | Shamanism |
| Zoró | Tupian → Monde → Gavião of Jiparaná → Zoró | Brazil | | Christianity |