Different sources count languages differently, but Austronesian and Niger–Congo are the two largest language families in the world by the number of languages they contain, each having roughly one-fifth of the total languages counted in the world.
Eri allikad liigitavad keeli erinevalt, kuid austroneesia ja nigeri-kongo keeled on maailma kaks suurimat keelkonda: kumbagi neist kuulub umbes viiendik maailma keeltest.