| gaaGaGã | gaa | Niger–Congo | | 745,000 | 4 · Educational |
| gqaGa'anda | gqa | Afroasiatic | | | |
| gdgGa'dang | gdg | Austronesian | | | 5 · Developing |
| ttbGaa | ttb | Niger–Congo | | | 6a · Vigorous |
| gbuGaagudju | gbu | Australian Aboriginal languages | | | 10 · Extinct |
| gabGabri | gab | Afroasiatic | | | 5 · Developing |
| tdaGadal | tda | Nilo-Saharan | | 26,900 | 6a · Vigorous |
| gdkGadang | gdk | Afroasiatic | | | 7 · Shifting |
| gadGaddang | gad | Austronesian | | | 6a · Vigorous |
| gedGade | ged | Niger–Congo | | | 6a · Vigorous |
| gdaGade Lohar | gda | Indo-European | | | 6a · Vigorous |
| gajGadsup | gaj | Trans–New Guinea | | | 5 · Developing |
| gagGagauzGagauz dili | gag | Turkic | | 148,720 | 5 · Developing |
| btgGagnoa Bété | btg | — | | | 6a · Vigorous |
| gguGagu | ggu | Niger–Congo | | | 6a · Vigorous |
| bfuGahri | bfu | Bodish | | | 6b · Threatened |
| gbfGaikundi | gbf | Sepik | | | 5 · Developing |
| gcnGaina | gcn | Trans–New Guinea | | | 6a · Vigorous |
| gdhGajirrabeng | gdh | Jarrakan | | | 9 · Dormant |
| gapGal | gap | Trans–New Guinea | | | 6b · Threatened |
| kbaGalaagu | kba | Australian Aboriginal languages | | | 10 · Extinct |
| xgaGalatian | xga | Indo-European | | | |
| gbiGalelabahasa Galela | gbi | West Papuan | | | 5 · Developing |
| garGaleya | gar | Austronesian | | | 6a · Vigorous |
| gceGalice | gce | Na-Dene | | | 10 · Extinct |
| glgGalicianlingua galega | glg | Indo-European | | 2.4 m | 2 · Provincial |
| adlGallong | adl | Sino-Tibetan | | 80,597 | 5 · Developing |
| sdnGallurese | sdn | Indo-European | | 100,000 | 6b · Threatened |
| galGaloli | gal | Austronesian | | | 6a · Vigorous |
| kgjGamale Kham | kgj | Sino-Tibetan | | | 6a · Vigorous |
| gmaGambera | gma | Worrorran | | | 10 · Extinct |
| wofGambian Wolof | wof | Niger–Congo | | | 3 · Wider Communication |
| kldGamilaraay | kld | Australian Aboriginal languages | | | 9 · Reawakening |
| gblGamit | gbl | Indo-European | | | 5 · Developing |
| gakGamkonorabahasa Gamkonora | gak | West Papuan | | | 6b · Threatened |
| gmoGamo-Gofa-Dawro | gmo | — | | 2 m | |
| ganGan Chinese贛語 | gan | Sino-Tibetan | | 22.1 m | 6a · Vigorous |
| gnkGǁana | gnk | Khoisan | | | 6b · Threatened |
| pgdGāndhārī | pgd | — | | | |
| gznGanebahasa Giman | gzn | Austronesian | | 2,900 | 6b · Threatened |
| gnbGangte | gnb | Sino-Tibetan | | | Definitely endangered |
| gnlGangulu | gnl | Australian Aboriginal languages | | | |
| gaoGants | gao | Trans–New Guinea | | | 6a · Vigorous |
| gzaGanza | gza | Mao | | | 6a · Vigorous |
| gnzGanzi | gnz | Niger–Congo | | | 6b · Threatened |
| ggaGao | gga | Austronesian | | | 6a · Vigorous |
| pwgGapapaiwa | pwg | Austronesian | | 3,000 | 5 · Developing |
| gbdGaradjari | gbd | Australian Aboriginal languages | | | 8a · Moribund |
| wrkGarawa | wrk | Australian Aboriginal languages | | | 8a · Moribund |
| gbcGarawan | gbc | Australian Aboriginal languages | | | |
| gbmGarhwaliगढ़वळि | gbm | — | | 3 m | 5 · Developing |
| cabGarifunaKarif | cab | Ta-Arawakan | +1 | 190,000 | 5 · Developing |
| grtGaro | grt | Sino-Tibetan | | 1 m | 2 · Provincial |
| gexGarre | gex | Afroasiatic | | | 6a · Vigorous |
| gscGascongascon | gsc | Indo-European | | 250,000 | Definitely endangered |
| gaqGataq | gaq | Austroasiatic | | | 6b · Threatened |
| gvoGavião of Jiparaná | gvo | Tupian | | | 5 · Developing |
| gouGawar | gou | — | | | 6a · Vigorous |
| gwtGawar-Bati | gwt | — | | 9,500 | Definitely endangered |
| gwdGawwada | gwd | Afroasiatic | | 69,000 | 5 · Developing |
| gicGayle | gic | — | | | 9 · Second language only |
| gayGayobahasa Gayo | gay | Austronesian | | | 6b · Threatened |
| gziGazi | gzi | Indo-European | | 7,030 | 7 · Shifting |
| gbrGbagyi | gbr | Niger–Congo | | | 5 · Developing |
| nbrGbantu | nbr | Niger–Congo | | | 6a · Vigorous |
| gbyGbari | gby | Niger–Congo | | | |
| gbaGbaya | gba | Niger–Congo | | | |
| gygGbayi | gyg | Niger–Congo | | 5,000 | 6a · Vigorous |
| gbsGbesi | gbs | Niger–Congo | | | 6a · Vigorous |
| grhGbiri-Niragu | grh | Niger–Congo | | | 6a · Vigorous |
| agbGbo | agb | Niger–Congo | | | 6a · Vigorous |
| diuGciriku | diu | Niger–Congo | | | 4 · Educational |
| gezGe'ezግዕዝ | gez | Afroasiatic | | | Extinct |
| kvqGeba Karen | kvq | Sino-Tibetan | | 40,000 | 5 · Developing |
| geiGebebahasa Gebe | gei | Austronesian | | | 6b · Threatened |
| gddGedaged | gdd | Austronesian | | | 5 · Developing |
| drsGedeo | drs | Afroasiatic | | 980,000 | 4 · Educational |
| gjiGeji | gji | Afroasiatic | | | 6a · Vigorous |
| hmjGejia | hmj | Hmong–Mien | | | 6b · Threatened |
| nlgGela | nlg | Austronesian | | | 5 · Developing |
| gioGelao | gio | Kra–Dai | | | Critically endangered |
| geqGeme | geq | Niger–Congo | | | 6b · Threatened |
| gejGen | gej | Niger–Congo | | | 3 · Wider Communication |
| gafGende | gaf | Trans–New Guinea | | | 6a · Vigorous |
| lgzGendza | lgz | Niger–Congo | | | 6a · Vigorous |
| katGeorgianქართული ენა | kat | Kartvelian | +3 | 3.7 m | 1 · National |
| gewGera | gew | Afroasiatic | | | 6a · Vigorous |
| gefGeraibahasa Gerai | gef | — | | | |
| deuGermanDeutsch | deu | Indo-European | +9 | 135 m | 1 · National |
| gsgGerman Sign LanguageM518x518S10010493x459S2ff00482x483S20500478x475 M581x524S15d09420x476S15d21446x477S2ef00455x504S15d09507x485S15d02519x486S20e00550x493S26506566x493 M542x525S16d10497x476S16d18479x484S27100502x501S27114458x510 | gsg | — | | | |
| gesGeser | ges | — | | | 6a · Vigorous |
| ghaGhadamès | gha | Afroasiatic | | 13,100 | 6b · Threatened |
| gpeGhanaian Pidgin English | gpe | Indo-European | | 5 m | 3 · Wider Communication |
| gseGhanaian Sign Language | gse | — | | | |
| griGhari | gri | Austronesian | | | 5 · Developing |
| bmkGhayavi | bmk | — | | | 5 · Developing |
| alnGheg Albanian | aln | — | +1 | | 5 · Developing |
| ghrGhera | ghr | Indo-European | | | |
| bbjGhomala'Ghɔmálá’ | bbj | Niger–Congo | | | 5 · Developing |
| ghoGhomara | gho | Afroasiatic | | | 6a · Vigorous |
| aaaGhotuo | aaa | Niger–Congo | | 9,000 | 6a · Vigorous |
| gidGidar | gid | Afroasiatic | | | 5 · Developing |
| kikGikuyuGĩkũyũ | kik | Niger–Congo | | 6.6 m | 5 · Developing |
| glkGilakiگيلکي | glk | Indo-European | | 2.5 m | 4 · Educational |
| gilGilberteseTaetae ni Kiribati | gil | Austronesian | | 116,280 | 1 · National |
| gipGimi | gip | Austronesian | | | 5 · Developing |
| aygGinyanga | ayg | Niger–Congo | | | 6a · Vigorous |
| bbrGirawa | bbr | Trans–New Guinea | | | 5 · Developing |
| giiGirirra | gii | Afroasiatic | | | |
| nyfGiryama | nyf | Niger–Congo | | | 5 · Developing |
| gihGithabul | gih | Australian Aboriginal languages | | | 8b · Nearly Extinct |
| gitGitxsan | git | Tsimshianic | | 930 | Severely endangered |
| giyGiyug | giy | Australian Aboriginal languages | | 2 | 10 · Extinct |
| tofGizrra | tof | Eastern Trans-Fly | | | 5 · Developing |
| oubGlio-Ubi | oub | Niger–Congo | | | 6b · Threatened |
| gnuGnau | gnu | Torricelli | | | 6a · Vigorous |
| gomGoan Konkani | gom | — | | 3.6 m | 5 · Developing |
| gigGoaria | gig | Indo-European | | | |
| goxGobu | gox | Niger–Congo | | | 6a · Vigorous |
| gdoGodoberi | gdo | Northeast Caucasian | | 130 | 7 · Shifting |
| ankGoemai | ank | Afroasiatic | | 347,005 | 6b · Threatened |
| gogGogo | gog | Niger–Congo | | | 5 · Developing |
| zkgGoguryeo고구려어 | zkg | Koreanic | | | |
| gknGokana | gkn | Niger–Congo | | | 5 · Developing |
| golGola | gol | Niger–Congo | | | 5 · Developing |
| mtgGoliathbahasa Una | mtg | Trans–New Guinea | | | 4 · Educational |
| gvfGolin | gvf | Trans–New Guinea | | | 5 · Developing |
| gonGondi | gon | Dravidian | | 3 m | Vulnerable |
| gooGone Dau | goo | Austronesian | | 690 | |
| goeGongduk | goe | Sino-Tibetan | | 1,000 | Vulnerable |
| gjnGonja | gjn | Niger–Congo | | | 4 · Educational |
| gqrGor | gqr | Nilo-Saharan | | | 6a · Vigorous |
| hacGorani | hac | Indo-European | | 40,000 | 7 · Shifting |
| goqGorap | goq | — | | | 7 · Shifting |
| xggGoreng | xgg | Australian Aboriginal languages | | | 10 · Extinct |
| gorGorontaloHulontalo | gor | Austronesian | | 1 m | 6b · Threatened |
| grqGorovu | grq | Ramu–Lower Sepik | | | Severely endangered |
| pcjGorum | pcj | Austroasiatic | | | 8b · Nearly Extinct |
| gotGothic | got | Indo-European | +1 | | Extinct |
| goyGoundo | goy | Niger–Congo | | | 8a · Moribund |
| kbkGrass Koiari | kbk | Trans–New Guinea | | | 6b · Threatened |
| grbGrebo | grb | Niger–Congo | | | |
| gssGreek Sign Language | gss | — | | 40,600 | |
| giqGreen Gelao | giq | Kra–Dai | | | 8b · Nearly Extinct |
| kalGreenlandicKalaallisut | kal | — | | 56,200 | 1 · National |
| grsGresibahasa Geresi | grs | Northwest Papuan | | | 8a · Moribund |
| groGroma | gro | Southern Tibetic | | | 6b · Threatened |
| atsGros Ventre | ats | Algic | | 10 | 9 · Dormant |
| gwxGua | gwx | Niger–Congo | | | 6a · Vigorous |
| gcfGuadeloupean Creole | gcf | Antillean Creole | | | 6a · Vigorous |
| guhGuahibo | guh | Guajiboan | | 23,006 | Vulnerable |
| gvjGuajá | gvj | Tupian | | | 6a · Vigorous |
| gubGuajajára | gub | Tupian | | | 4 · Educational |
| gumGuambianonamuy wam | gum | Barbacoan | | 20,782 | 5 · Developing |
| gncGuanche | gnc | Afroasiatic | | | Extinct |
| grnGuaraniAvañe'ẽ | grn | Tupian | +1 | 4.5 m | Safe |
| gyrGuarayu | gyr | — | | | Definitely endangered |
| gtaGuató | gta | — | | 4 | Critically endangered |
| guoGuayabero | guo | Guajiboan | | 1,000 | 5 · Developing |
| gymGuaymí | gym | Chibchan | | | Vulnerable |
| gbwGubbi Gubbi | gbw | Australian Aboriginal languages | | | 9 · Dormant |
| xgdGudang | xgd | Australian Aboriginal languages | | | 10 · Extinct |
| gdeGude | gde | Afroasiatic | | | 5 · Developing |
| gduGudu | gdu | Afroasiatic | | | 6a · Vigorous |
| zabGuelavía Zapotec | zab | Central American Indian languages | | 28,000 | 5 · Developing |
| amuGuerrero Amuzgo | amu | Central American Indian languages | | | 5 · Developing |
| nguGuerrero Nahuatl | ngu | Uto-Aztecan | | 150,000 | 6a · Vigorous |
| zpgGuevea Zapotec | zpg | — | | | 5 · Developing |
| wrwGugu Warra | wrw | Australian Aboriginal languages | | | 10 · Extinct |
| kkpGugubera | kkp | Australian Aboriginal languages | | | 8b · Nearly Extinct |
| gwjGǀui | gwj | Khoisan | | | 6b · Threatened |
| gcrGuianan CreoleKriyòl Gwiyannen | gcr | French-based creole languages | | 300,000 | 6a · Vigorous |
| povGuinea-Bissau Creole | pov | — | | 500,000 | 5 · Developing |
| gqiGuiqiong | gqi | Sino-Tibetan | | | Vulnerable |
| gujGujaratiગુજરાતી | guj | Indo-European | | 46.9 m | 2 · Provincial |
| gjuGujari | gju | Indo-European | | | 5 · Developing |
| gmbGula'alaa | gmb | Austronesian | | | 6a · Vigorous |
| gljGula Iro | glj | — | | | 6a · Vigorous |
| glyGule | gly | Nilo-Saharan | | | 9 · Dormant |
| afbGulf Arabic | afb | Afroasiatic | +5 | | 3 · Wider Communication |
| gulGullah | gul | — | | 550 | |
| gnnGumatj | gnn | Australian Aboriginal languages | | 116 | 5 · Developing |
| gukGumuz | guk | — | | 219,000 | 4 · Educational |
| guwGunGungbe | guw | Niger–Congo | | 1.5 m | 5 · Developing |
| wlgGunbarlang | wlg | Australian Aboriginal languages | | | 9 · Dormant |
| gdiGundi | gdi | Niger–Congo | | | 6a · Vigorous |
| rubGungu | rub | Niger–Congo | | | 5 · Developing |
| gniGuniyandi | gni | — | | 100 | 8a · Moribund |
| yasGunu | yas | Niger–Congo | | | 5 · Developing |
| gupGunwinggu | gup | Australian Aboriginal languages | | 1,702 | 6b · Threatened |
| gufGupapuyngu | guf | Australian Aboriginal languages | | | Vulnerable |
| ggeGuragone | gge | Maningrida | | 60 | 6b · Threatened |
| grzGuramalum | grz | Austronesian | | | Critically endangered |
| gdjGurdjar | gdj | Australian Aboriginal languages | | | 9 · Dormant |
| gnrGureng Gureng | gnr | Australian Aboriginal languages | | | 9 · Dormant |
| gggGurgula | ggg | Indo-European | | | 6a · Vigorous |
| gjrGurindji Kriol | gjr | — | | | 6a · Vigorous |
| gueGurinji | gue | Ngumbin | | | 7 · Shifting |
| gvmGurmana | gvm | Niger–Congo | | | Severely endangered |
| goaGuro | goa | Niger–Congo | | | 5 · Developing |
| bquGuru | bqu | Niger–Congo | | | 8b · Nearly Extinct |
| gvrGurung | gvr | Bodish | | | 6b · Threatened |
| grdGuruntum | grd | Afroasiatic | | | 8a · Moribund |
| gsnGusan | gsn | Trans–New Guinea | | | 6a · Vigorous |
| guzGusii | guz | Niger–Congo | | | |
| gbjGutob | gbj | Austroasiatic | | | 6b · Threatened |
| gvnGuugu Yalandji | gvn | Australian Aboriginal languages | | 388 | Severely endangered |
| kkyGuugu Yimithirr | kky | Australian Aboriginal languages | | 780 | 6b · Threatened |
| xgwGuwa | xgw | Australian Aboriginal languages | | | 10 · Extinct |
| gkaGuya | gka | Trans–New Guinea | | | 6b · Threatened |
| gynGuyanese Creole | gyn | — | | 700,000 | 5 · Developing |
| gwbGwa | gwb | Niger–Congo | | | 6b · Threatened |
| dahGwahatike | dah | Trans–New Guinea | | | 5 · Developing |
| jgkGwak | jgk | Niger–Congo | | 70,000 | 6a · Vigorous |
| gbyGwari | gby | Niger–Congo | | | 6a · Vigorous |
| grwGweda | grw | Austronesian | | | 8a · Moribund |
| gweGweno | gwe | Niger–Congo | | | 8a · Moribund |
| gwrGwere | gwr | Niger–Congo | | | |
| gwiGwich’inDinjii Zhuʼ Ginjik | gwi | Na-Dene | | 670 | 7 · Shifting |
| yayGwune | yay | Niger–Congo | | | 5 · Developing |
| jyaGyalrong | jya | Sino-Tibetan | | | 6a · Vigorous |
| gyiGyele | gyi | Niger–Congo | | | 6b · Threatened |
| gyeGyem | gye | Niger–Congo | | | Critically endangered |