The Mangyan (Iraya, Alangan, Batangan, Tadyawan, Buhid, Tao Buid, Hanunoo, Ratagnon; also known in literature as Mangianes, Manghianes, Manguianes, Tiron, Lactan, Buquit, Barangan, Tagaydan, Pula, Nauhan, and Buid) is a generic term that refer to the indigenous peoples of the island of Mindoro.

       Several groupings have been noted by different authorities. These include: (1) Hanunoo, southern part of Oriental Mindoro, (2) Buhid, just north of the Hanunoo, (3) Batangan, in the interior forests north of the Buhid, (4) Ratagnon, in the southern tip of the island, (5) Iraya, on the northern tip of Mindoro, (6) Tadyawan, on the east and northeastern side, and (7) Alangan, on the vicinity Mount Halcon. The range of the other names by which they are known is also very wide, especially with reference to exonyms. The estimated population is 30,000 (NSO 1980) with core areas located in the towns of Sablayan (4,140 NSO 1980), Bulalacao (5,316 NSO 1990), and Mansalay (4,090 NSO 1980).

       Settlements are usually composed of five to twelve houses with single families, on slopes near mountain streams. Each settlement is usually identified by the name of the oldest member. An aggregation of settlements may be geographically identified. The basic subsistence is shifting cultivation with corn and rice as crops, intercropped with beans and sugar cane, later planted to sweet potato, yam, and taro.

       The single most impressive distinction of the Mangyan is their continued use of a native Indic-based script or syllabary for writing their ambahan or urukay, a form of poetry and song. These are written by stylus or knives on slivers of bamboo. These are sang or chanted accompanied by guitars, fiddles, flutes or jew’s harps. Only the Hanunoo of southeastern Mindoro and the Buhid on the south of Bongabon River actually use the script, although there is a second type of script unknown to these two groups. This script is used by the Buhid along the Tangon River.

Distribution of Ethnic Groups by Provinces (Arrangement: Population count)
Total National Population	21,862 (NSO 1980:30000)
Aklan	127
Agusan del N.	10 (Ir.)
Benguet	20
Cavite	19 (Ir.)
Cagayan	9 (Ir.)
Cavite	22 (Ir.)
Davao Or.	10 (Ir.)
Ilocso N.	12 (Ir.)
Ilocos S.	10
Lanao del N.	53 (Ir.)
Misamis Occ.	20 (Ir.)
Misamis Occ.	9
Occ. Mindoro	5,172
Or. Mindoro	15,639
Occ. Mindoro	380 (Ir.)
Or. Mindoro	75 (Ir.)
Palawan	9
Pampanga	11
Pangasinan	10
Rizal	50 (Ir.)
S. Kudarat	9
Sulu	20 (Ir.)
Surigao del S.	10 (Ir.)
Zamboanga S.	23 (Ir.)
Mandaluyong	10 (Ir.)
Manila	52
Makati	11 (Ir.)
Makati	10
Paranaque	10
Pasay	10
Pasay	10 (Ir.)
Quezon City	10
N. Cotabato	10 (Ir.)
(Note: in NSO 1990 Census Mangyan is distinguished from Iraya)