ISO 639:d

| (drw)  |  |  | I/L |  |  | Darwazi |  |  |  |  |  |
| dry  |  |  | I/L |  |  | Darai |  |  |  |  |  |
| dsb  |  | dsb | I/L |  | dolnoserbski | Sorbian, Lower | bas-sorabe | bajo sorbio | 下索布语; 低地文德语 | нижнелужицкий | Nieder-Sorbisch |
| dse  |  |  | I/L |  |  | Dutch Sign Language |  |  | 荷兰手语 |  | Holländische Zeichensprache |
| dsh  |  |  | I/L |  |  | Daasanach |  |  |  |  |  |
| dsi  |  |  | I/L |  |  | Disa |  |  |  |  |  |
| dsl  |  |  | I/L |  |  | Danish Sign Language |  |  | 丹麦手语 | датский жестовый | Dänische Zeichensprache |
| dsn  |  |  | I/E |  |  | Dusner |  |  |  |  |  |
| dso  |  |  | I/L |  |  | Oriya, Desiya |  |  |  |  |  |
| dsq  |  |  | I/L |  |  | Dawsahak |  |  |  |  |  |
| dta  |  |  | I/L |  |  | Daur |  |  | 达斡尔语 |  |  |
| dtb  |  |  | I/L |  |  | Kadazan, Labuk-Kinabatangan |  |  |  |  |  |
| dtd  |  |  | I/L |  |  | Ditidaht |  |  |  |  |  |
| dth  |  |  | I/E |  |  | Adithinngithigh |  |  |  |  |  |
| dti  |  |  | I/L |  |  | Dogon, Ana Tinga |  |  |  |  |  |
| dtk  |  |  | I/L |  |  | Dogon, Tene Kan |  |  |  |  |  |
| dtm  |  |  | I/L |  |  | Dogon, Tomo Kan |  |  |  |  |  |
| dtn  |  |  | I/L |  |  | Daats'iin |  |  |  |  |  |
| dto  |  |  | I/L |  |  | Tommo So Dogon |  |  |  |  |  |
| dtp  |  |  | I/L |  |  | Dusun, Central |  |  |  |  |  |
| dtr  |  |  | I/L |  |  | Lotud |  |  |  |  |  |
| dts  |  |  | I/L |  |  | Dogon, Toro So |  |  |  |  |  |
| dtt  |  |  | I/L |  |  | Dogon, Toro Tegu |  |  |  |  |  |
| dtu  |  |  | I/L |  |  | Dogon, Tebul Ure |  |  |  |  |  |
| dty  |  |  | I/L |  |  | Dotyali |  |  |  |  |  |
| dua  |  | dua | I/L |  | Duala | Duala | douala |  | 杜亚拉语 | дуала |  |
| dub  |  |  | I/L |  |  | Dubli |  |  |  |  |  |
| duc  |  |  | I/L |  |  | Duna |  |  |  |  |  |
| (dud)  |  |  | I/L |  |  | Hun-Saare |  |  |  |  |  |
| due  |  |  | I/L |  |  | Agta, Umiray Dumaget |  |  |  |  |  |
| duf  |  |  | I/L |  |  | Dumbea |  |  |  |  |  |
| dug  |  |  | I/L |  |  | Duruma |  |  |  |  |  |
| duh  |  |  | I/L |  |  | Dungra Bhil |  |  |  |  |  |
| dui  |  |  | I/L |  |  | Dumun |  |  |  |  |  |
| (duj)  |  |  | I/L |  |  | Dhuwal |  |  |  |  |  |
| duk  |  |  | I/L |  |  | Duduela |  |  |  |  |  |
| dul  |  |  | I/L |  |  | Agta, Alabat Island |  |  |  |  |  |
| dum  |  | dum | I/H |  |  | Dutch, Middle (ca.1050-1350) | néerlandais moyen | neerlandés medio | 中古荷兰语 | средненидерландский | Mittelniederländisch |
| dun  |  |  | I/L |  |  | Dusun Deyah |  |  |  |  |  |
| duo  |  |  | I/L |  |  | Agta, Dupaninan |  |  |  |  |  |
| dup  |  |  | I/L |  |  | Duano' |  |  |  |  |  |
| duq  |  |  | I/L |  |  | Dusun Malang |  |  |  |  |  |
| dur  |  |  | I/L |  |  | Dii |  |  |  |  |  |
| dus  |  |  | I/L |  |  | Dumi |  |  |  |  |  |
| duu  |  |  | I/L |  |  | Drung |  |  | 独龙语 |  |  |
| duv  |  |  | I/L |  |  | Duvle |  |  |  |  |  |
| duw  |  |  | I/L |  |  | Dusun Witu |  |  |  |  |  |
| dux  |  |  | I/L |  |  | Duungooma |  |  |  |  |  |
| duy  |  |  | I/E |  |  | Agta, Dicamay |  |  |  |  |  |
| duz  |  |  | I/E |  |  | Duli |  |  |  |  |  |
| dva  |  |  | I/L |  |  | Duau |  |  |  |  |  |
| dwa  |  |  | I/L |  |  | Diri |  |  |  |  |  |
| (dwl)  |  |  | I/L |  |  | Dogon, Walo Kumbe |  |  |  |  |  |
| dwr  |  |  | I/L |  |  | Dawro |  |  |  |  |  |
| dws  |  |  | I/C |  |  | Dutton World Speedwords |  |  |  |  |  |
| dwu  |  |  | I/L | Pama–Nyungan |  | Dhuwal |  |  |  |  |  |
| dww  |  |  | I/L | Austronesian |  | Dawawa |  |  |  |  |  |
| dwy  |  |  | I/L | Pama–Nyungan |  | Dhuwaya |  |  |  |  |  |
| dwz  |  |  | I/L | Indo-European |  | Dewas Rai |  |  |  |  |  |
| dya  |  |  | I/L |  |  | Dyan |  |  |  |  |  |
| dyb  |  |  | I/E |  |  | Dyaberdyaber |  |  |  |  |  |
| dyd  |  |  | I/E |  |  | Dyugun |  |  |  |  |  |
| dyg  |  |  | I/E |  |  | Agta, Villa Viciosa |  |  |  |  |  |
| dyi  |  |  | I/L |  |  | Senoufo, Djimini |  |  |  |  |  |
| (dyk)  |  |  |  |  |  | Land Dayak |  |  |  |  |  |
| dym  |  |  | I/L |  |  | Dogon, Yanda Dom |  |  |  |  |  |
| dyn  |  |  | I/L |  |  | Dyangadi |  |  |  |  |  |
| dyo  |  |  | I/L |  |  | Jola-Fonyi |  |  |  |  |  |
| dyu  |  | dyu | I/L |  | Julakan | Dyula | dioula |  | 迪尤拉语 | диула | Dioula |
| dyy  |  |  | I/L |  |  | Dyaabugay |  |  |  |  |  |
| dza  |  |  | I/L |  |  | Duguza |  |  |  |  |  |
| (dzd)  |  |  | I/L |  |  | Daza |  |  |  |  |  |
| dze  |  |  | I/E |  |  | Djiwarli |  |  |  |  |  |
| dzg  |  |  | I/L |  |  | Dazaga |  |  |  |  |  |
| dzl  |  |  | I/L |  |  | Dzalakha |  |  |  |  |  |
| dzn  |  |  | I/L |  |  | Dzando |  |  |  |  |  |
| dzo  | dz | dzo | I/L | Sino-Tibetan | རྫོང་ཁ | Dzongkha | dzongkha | dzongkha | 宗喀语; 不丹语 | дзонг-кэ | Dzongkha |