The Latagnun Alphabet

Latagnun is an alternate name for the language also called Ratagnon and Datagnon — a critically endangered Philippine language ^[1] spoken in Occidental Mindoro, Philippines. All three names (Latagnun, Ratagnon, Datagnon) refer to the same speech variety with ISO 639-3 code btn. With fewer than 100 estimated speakers, the language is among the most endangered in the Philippines. It is spoken by a small indigenous community in Occidental Mindoro, where the language has been increasingly displaced by Tagalog.

The variation in names (Latagnun, Datagnon, Ratagnon) reflects differences in how the community or language name was recorded or transliterated by different researchers and sources. Academic linguistic literature most commonly uses Ratagnon. On EveryAlphabet.com, we maintain pages for all three names to ensure comprehensive coverage for users who may encounter any of these names in their research.

Yes — Latagnun, Ratagnon, and Datagnon are all names for the same language ^[2] with ISO 639-3 code btn, spoken in Occidental Mindoro, Philippines. The three names are alternate designations for the same speech variety. Linguistic databases such as Ethnologue and Glottolog list the language primarily as Ratagnon, with Datagnon and Latagnun noted as alternate names. The alphabet, phonology, and grammar are identical across all three designations since they describe the same language.

EveryAlphabet.com maintains separate pages for Latagnun, Datagnon, and Ratagnon to ensure that users searching under any of these names can find comprehensive information. All three pages reference the same SIL Ethnologue and Glottolog entries for the Ratagnon language (ISO 639-3: btn). We do not create separate reference entries for Latagnun or Datagnon, as these names do not have independent entries in linguistic databases — they share the Ratagnon entry.

Latagnun (Ratagnon) belongs to the Malayo-Polynesian branch of Austronesian ^[2], specifically within the Mindoro language subgroup of Philippine languages. The Mindoro languages are a cluster of Austronesian languages spoken on Mindoro island that developed their distinct characteristics over centuries of relative isolation. These languages include Hanunuo, Buhid, Alangan, Tadyawan, Iraya, and others, with Ratagnon (Latagnun/Datagnon) representing one of the smallest and most endangered members of this group.

The Philippine Austronesian languages are descendants of the ancient Austronesian expansion from Taiwan approximately 4,000-5,000 years ago. The Philippines is one of the most linguistically diverse areas in the Austronesian world, with over 170 living languages. Latagnun (Ratagnon) represents one of the most endangered members of this heritage, and its documentation is valuable for understanding the full scope of Philippine Austronesian linguistic diversity.

Latagnun uses the Latin alphabet ^[1] with 20 letters: 5 vowels (A, E, I, O, U), 14 consonants (B, D, G, H, K, L, M, N, P, R, S, T, W, Y), and the Ng digraph. This is the same alphabet as the Ratagnon and Datagnon pages on EveryAlphabet.com, since all three names refer to the same language. The Latin alphabet was introduced to the Philippines during the Spanish colonial period and became the standard writing system for Philippine languages.

The Ng digraph in Latagnun (Ratagnon) represents the velar nasal consonant and, consistent with other Philippine languages, can appear word-initially. The Latin orthography used in linguistic documentation of Latagnun follows conventions similar to those used for other Philippine languages. The glottal stop is an important phoneme in the language but may not always be explicitly marked in the written orthography.

EveryAlphabet.com maintains separate pages for Latagnun, Datagnon, and Ratagnon ^[1] to ensure comprehensive coverage of this critically endangered Philippine language under all its known names. Users searching for "Latagnun alphabet" should find relevant information just as easily as users searching for "Ratagnon alphabet." This approach follows the practice of linguistic databases that list primary names and alternate names, making all names searchable.

All three pages reference the same SIL Ethnologue and Glottolog entries for the Ratagnon language (ISO 639-3: btn). The content across all three pages acknowledges that Latagnun, Datagnon, and Ratagnon are alternate names for the same language. We specifically do not create separate SIL-latagnun or Glottolog-latagnun reference entries, since these names do not have independent entries in linguistic databases — they share the Ratagnon entry, which is the primary name used in academic linguistics.