The Supanecan or Tlapanecan languages are Tlapanec (Me'phaa) of Guerrero and the extinct Subtiaba of Nicaragua. The family was recognized in 1925 by Edward Sapir, who linked them to his Hokan proposal. However, they are the most recently recognized members of the Oto-Manguean language family, the relationship having been demonstrated in 1977 by Jorge Suárez. The Oto-Manguean affiliation of Tlapaneco-Subtiaba is supported by Kaufman (2016).