Otachyrium is a genus of South American plants in the grass family. Species * Send. & Soderstr. - Bahia, Minas Gerais * Renvoize - Bolivia * Send. & Soderstr. - Venezuela (Amazonas), Brazil (Goiás, Amazonas, D.F., Roraima) * Pilg. - Guyana, Suriname, French Guiana, Venezuela, Brazil * Send. & Soderstr. - Goiás * (Trin.) Pilg. - Minas Gerais, Amazonas, D.F. * Send. & Soderstr. - Goiás, Mato Grosso, D.F. * (Döll) Henrard - Guyana, Suriname, French Guiana, Venezuela, Brazil, Colombia, Bolivia, Paraguay, Argentina (Corrientes, Misiones)