| Family | Language | # Speakers | % Correct |
|---|---|---|---|
| Indo-European | Russian | 150 million | 98%
|
| Indo-European | Ukrainian | 35 million | 95%
|
| Indo-European | Serbian | 12 million* | 89%
|
| Turkic | Kazakh | 13 million* | 88%
|
| Indo-European | Belarussian | 5 million | 85%
|
| Indo-European | Bulgarian | 8 million | 84%
|
| Mongolian | Khalkha | 3 million* | 84%
|
| Mongolian | Oirat | 368 thousand* | 84%
|
| Turkic | Uzbek | 34 million* | 81%
|
| Turkic | Turkmen | 11 million* | 80%
|
| Indo-European | Tajik | 8.1 million* | 79%
|
| Turkic | Kyrgyz | 4 million* | 77%
|
| Indo-European | Macedonian | 3 million | 76%
|
| Indo-European | Bosnian | 3 million* | 66%
|
| Turkic | Azeri | 23 million* | 65%
|
| Indo-European | Tat | 28 thousand* | 62%
|
| Indo-European | Montenegrin | 233 thousand* | 61%
|
| Turkic | Crimean Tatar | 540 thousand* | 60%
|
| Turkic | Siberian Tatar | 100 thousand* | 59%
|
| Turkic | Tatar | 5 million* | 59%
|
| Northeast Caucasian | Chechen | 1.4 million | 56%
|
| Indo-European | Balkan Romani | 563 thousand* | 52%
|
| Indo-European | Vlax Romani | 538 thousand* | 52%
|
| Turkic | Balkan Gagauz Turkish | 500 thousand* | 46%
|
| Indo-European | Romanian | 25 million* | 43%
|
| Northwest Caucasian | Abkhaz | 190 thousand | 42%
|
| Turkic | Bashkir | 1.4 million | 36%
|
| Turkic | Chuvash | 1 million | 35%
|
| Turkic | Yakut | 450 thousand | 35%
|
| Mongolian | Kalmyk | 81 thousand* | 32%
|
| Turkic | Uyghur | 10 million* | 32%
|
| Uralic | Udmurt | 550 thousand | 30%
|
| Uralic | Hill Mari | 30 thousand | 29%
|
| Northeast Caucasian | Ingush | 650 thousand | 29%
|
| Uralic | Meadow Mari | 470 thousand | 29%
|
| Indo-European | Rusyn | 624 thousand | 29%
|
| Uralic | Komi-Yazva | 2 thousand | 28%
|
| Uralic | Komi-Zyryan | 160 thousand | 28%
|
| Uralic | Northwestern Mari | 7 thousand | 28%
|
| Uralic | Permyak | 63 thousand | 28%
|
| Turkic | Tuvan | 280 thousand | 27%
|
| Northwest Caucasian | Adyghe | 576 thousand* | 26%
|
| Uralic | Forest Nenets | 1.5 thousand | 26%
|
| Uralic | Tundra Nenets | 22 thousand | 26%
|
| Mongolian | Buryat | 330 thousand* | 25%
|
| Turkic | Altay | 56 thousand | 24%
|
| Uralic | Kildin Sami | 340 | 24%
|
| Indo-European | Kurmanji | 15 million* | 24%
|
| Uralic | Ter Sámi | 2 | 24%
|
| Northeast Caucasian | Avar | 1 million | 21%
|
| Turkic | Karachay-Balkar | 310 thousand | 21%
|
| Chukotko-Kamchatkan | Chukchi | 5 thousand | 20%
|
| Uralic | Moksha | 143 thousand | 19%
|
| Uralic | Erzya | 287 thousand | 17%
|
| Northwest Caucasian | Kabardian | 1.7 million* | 16%
|
| Turkic | Khakas | 43 thousand | 16%
|
| Tungusic | Even | 5.7 thousand | 15%
|
| Uralic | Khanty | 10 thousand | 15%
|
| Uralic | Mansi | 940 | 15%
|
| Turkic | Nogai | 87 thousand | 15%
|
| Eskimo-Aleut | Aleut | 150* | 14%
|
| Turkic | Kumyk | 450 thousand* | 14%
|
| Northwest Caucasian | Abaza | 50 thousand* | 13%
|
| Tungusic | Evenki | 27 thousand* | 12%
|
| Northeast Caucasian | Lak | 152 thousand | 12%
|
| Northeast Caucasian | Lezgian | 1 million | 12%
|
| Sino-Tibetan | Dungan | 110 thousand | 11%
|
| Uralic | Enets | 43 | 11%
|
| Isolate | Nivkh | 198* | 11%
|
| Indo-European | Ossetic | 597 thousand | 10%
|
| Yukaghir | Southern Yukaghir | 50 | 10%
|
| Yukaghir | Tundra Yukaghir | 370 | 10%
|
| Northeast Caucasian | Tabassaran | 127 thousand | 9%
|
| Eskimo-Aleut | Central Siberian Yupik | 1.2 thousand* | 8%
|
| Northeast Caucasian | Dargwa | 490 thousand | 8%
|
| Yeniseian | Ket | 20 | 8%
|
| Chukotko-Kamchatkan | Koryak | 1.7 thousand | 8%
|
| Eskimo-Aleut | Naukan Yupik | 60 | 8%
|
| Uralic | Nganasan | 125 | 8%
|
| Uralic | Selkup | 1 thousand | 8%
|
| Turkic | Dolgan | 1.1 thousand | 7%
|
| Chukotko-Kamchatkan | Itelmen | 82 | 7%
|
| Indo-European | Talysh | 218 thousand* | 7%
|
| Northeast Caucasian | Tsakhur | 22 thousand* | 7%
|
| Northeast Caucasian | Aghul | 29 thousand | 6%
|
| Tungusic | Nanai | 1.4 thousand | 6%
|
| Northeast Caucasian | Rutul | 36 thousand | 6%
|
| Turkic | Shor | 2.8 thousand | 6%
|
| Northeast Caucasian | Udi | 6.6 thousand | 6%
|
| Uralic | Vepsian | 1.6 thousand | 6%
|
| Uralic | Votic | 4 | 6%
|
| Northeast Caucasian | Andi | 5.8 thousand | 5%
|
| Northeast Caucasian | Archi | 970 | 5%
|
| Turkic | Krymchak | 200* | 5%
|
| Turkic | Urum | 190 thousand* | 5%
|
| Turkic | Chulym | 44 | 4%
|
| Turkic | Karaim | 80* | 4%
|
| Tungusic | Orok | ~35 | 4%
|
| Turkic | Tofa | 93 | 4%
|
| Northeast Caucasian | Tsez | 13 thousand | 4%
|
| Tungusic | Udege | 100 | 4%
|
| Northeast Caucasian | Khinalug | 3 thousand | 3%
|
| Tungusic | Oroch | 8 | 3%
|
| Tungusic | Ulch | 150 | 3%
|
| Northeast Caucasian | Akhvakh | 13 thousand | 2%
|
| Indo-European | Judeo-Tat | 101 thousand* | 2%
|
| Northeast Caucasian | Karata | 260 | 2%
|
| Tungusic | Negidal | 75 | 2%
|
| Indo-European | Yaghnobi | 12 thousand* | 2%
|
| Chukotko-Kamchatkan | Alyutor | 25 | 1%
|
| Northeast Caucasian | Bezhta | 6.8 thousand | 1%
|
| Northeast Caucasian | Godoberi | 130 | 1%
|
| Indo-European | Shughni | 75 thousand* | 1%
|
| Indo-European | Yazghulami | 9 thousand* | 1%
|
| Turkic | Dhukan | 500 | 0%
|