| 638 | Cantonese | Matthews and Yip (1994) | Free |
| 481 | Carijona | Moreno (2000) | |
| 548 | Cassanga | Wilson (2007) | Free |
| 77 | Cassubian | Stone (1993a) | Free |
| 90 | Catalan | Wheeler (1988a) | |
| 182 | Cebuano | Wolff (1965) | Free |
| 517 | Chachi | Floyd (2010) | |
| 284 | Chadian Spoken Arabic (Nigerian Dialect) | Owens (1993) | Free |
| 113 | Chamorro | Topping (1973) | |
| 447 | Chichewa | Bentley and Kulemeka (2001) | |
| 311 | Chimariko | Jany (2009) | Free |
| 523 | Chimila | Amaya (1996) | |
| 496 | Chimila | Lozano (2000) | |
| 366 | Choctaw | Broadwell (2006) | Free |
| 549 | Cobiana | Wilson (2007) | Free |
| 495 | Cogui | Ortíz Ricaurte (2000) | |
| 659 | Cora - ICR - KQ | Casad, Eugene H. () | |
| 691 | Cora-ICR-LB | Casad, Eugene (1984) | |
| 669 | Cora-ICR-NE | Casad (1984) | |
| 660 | cora_ICR_TCC_2 | Casad (1984) | Free |
| 655 | Cora-ICR-WB | Casad, Eugene H. () | |
| 672 | Crow | Graczyk (2007) | |
| 342 | Crow | Graczyk (2007) | Free |
| 477 | Cubeo | Chacon (2012) | |
| 429 | Cubeo | Morse and Maxwell (1999) | Free |
| 462 | Cupeño | Hill (2005) | Free |
| 338 | Cupeño | Hill (2005) | Free |
| 492 | Curripaco | Mosonyi (2000) | |
| 72 | Czech | Short (1993a) | Free |
| 457 | Daasanach | Tosco (2001) | Free |
| 614 | Dagaare | Kropp Dakubu (2005) | Free |
| 7 | Dalabon | Evans et al. (2004) | |
| 561 | Daloa Bété | Zogbo (2004) | Free |
| 95 | Danish | Harbert (2007) | Free |
| 287 | Dargwa (Icari Dialect) | Sumbatova and Mutalov (2003) | Free |
| 505 | Dâw | Bolaños and Epps (2009) | |
| 174 | Dehu | Tryon (1967) | Free |
| 627 | Denya | Seguin (1998) | Free |
| 588 | Dii (Mambe' Dialect) | Bohnhoff (2010) | Free |
| 378 | Diyari | Austin (1981) | Free |
| 18 | Djapu | Morphy (1983) | Free |
| 104 | Djinang | Waters (1989) | Free |
| 593 | Dogon, Jamsay | Heath (2008) | Free |
| 450 | Dogon, Tommo So | Plungian (1995) | Free |
| 646 | Dre | Evans et al (2017) | |
| 191 | Duna | San Roque (2008) | Free |
| 34 | Dutch | Spronck (2013) | Free |
| 275 | Dzongkha | Hyslop (2014) | |
| 458 | East Makian (Waikyon Dialect) | Bowden (2001) | Free |
| 362 | Edera Awyu | Wester (2014) | Free |
