Tanak-e Olya (, also Romanized as à ¢anÃÂk-e âÂÂOlyÃÂ; also known as TanÃÂk-e BÃÂlÃÂ, à ¢anak BÃÂlÃÂ, à ¢anÃÂk-e BÃÂlÃÂ, and Tenak BÃÂlÃÂ) is a village in Mud Rural District, Mud District, Sarbisheh County, South Khorasan Province, Iran. At the 2006 census, it had a population of 107 and was home to 31 families.