| Language | Population | Bloc | Family | Cluster | Band | |
|---|---|---|---|---|---|---|
| ● Russian | 130,930,980 | Indo-European | Slavic | East Slavic | ||
| ● Ukrainian | 37,994,020 | Indo-European | Slavic | East Slavic | ||
| ● Belarusan | 9,864,610 | Indo-European | Slavic | East Slavic | ||
| ● Rusyn | 589,570 | Indo-European | Slavic | East Slavic |