| 484 | Ocaina | Rosselli (2000) | |
| 88 | Occitan | Wheeler (1988b) | |
| 137 | Oksapmin | Loughnane (2009) | Free |
| 202 | Oksapmin: clean | Loughnane (2009) | Free |
| 67 | Old Church Slavonic | Huntley (1993) | Free |
| 313 | Old Hittite | Hoffner Jr and Melcher (2008) | Free |
| 257 | Orokolo | Brown (1972) | Free |
| 42 | Paakantyi | Hercus (1982) | Free |
| 20 | Paamese | Crowley (1982) | |
| 533 | Páez | Jung (2008) | |
| 163 | Paiwan | Egli (1990) | Free |
| 552 | Pajade | Wilson (2007) | Free |
| 83 | Palauan | Josephs (1975) | |
| 413 | Panare | Payne (2013) | Free |
| 416 | Paraguayan Guaraní | Gregores and Suárez (1967) | Free |
| 346 | Pashto (Northern Dialect) | David (2014) | Free |
| 290 | Persian (Farsi) (Tehrani Dialect) | Mahootian (1997) | |
| 493 | Piapoco | Mosonyi (2000) | |
| 494 | Piaroa | Mosonyi (2000) | |
| 344 | Pipil | Campbell (1985) | |
| 76 | Polish | Rothstein (1993) | Free |
| 91 | Portuguese | Parkinson (1988) | Free |
| 252 | Puragi | de Vries (2004) | |
| 82 | Puyuma | Teng (2007) | Free |
| 463 | Raga: lml | Vari-Bogiri (2011) | Free |
| 644 | Ránmo | Evans et al (2017) | |
| 433 | Rapa Nui | Du Feu (1996) | Free |
| 238 | Rapoisi | Müller (1954) | |
| 439 | Ratahan | Himmelmann (1999) | Free |
| 16 | Rembarrnga | Saulwick (2003) | |
| 525 | Resígaro | Ramirez (2000) | |
| 355 | Riantana | Boelaars (1950) | Free |
| 39 | Ritharngu | Heath (1980b) | Free |
| 684 | Rongga | Arka (2016) | Free |
| 239 | Rotokas | Firchow (1987) | |
| 158 | Rukai | Li (1973) | |
| 87 | Rumanian | Mallinson (1988) | |
| 23 | Russian | Pulkina (1975) | Free |
| 460 | Saint Lucian Creole French | Carrington (1984) | Free |
| 60 | Salako | Adelaar (2002) | |
| 529 | Sáliba | Labrada (2016) | |
| 109 | Salt-Yui | Irwin (1974) | Free |
| 620 | Samba Daka | Boyd (2004) | Free |
| 21 | Samoan | Pratt (1893) | |
| 199 | Sanskrit | Egenes (2006) | Free |
| 419 | Sãotomense | Ferraz (1979) | Free |
| 330 | Sarcee | Cook (1984) | Free |
| 86 | Sardinian | Jones (1988) | Free |
| 175 | Satawalese | Roddy (2007) | |
| 310 | Savosavo | Wegener (2012) | Free |
