Itunyoso Trique /itunˈjoso ˈtɾiki/ is an Oto-Manguean language (Mixtecan branch) spoken in the town of San Martín Itunyoso, Oaxaca, Mexico. It is one of three Trique languages, all of which are spoken in Oaxaca, Mexico. According to the 2005 census (INEGI 2005), there are 1,345 inhabitants in the town, virtually all of whom speak Itunyoso Trique as a native language. However, this number does not reflect the total number of speakers, as approximately 30%–50% of the population lives outside of San Martín Itunyoso at any given time. The population of the nearby town of Concepción Itunyoso, with a population of 261 (ibid.), is considered to speak the same dialect. The remaining populations of speakers are found in Oaxaca City, Mexico City, and the United States.