Tehrathum District (Nepali: तेह्रथुम जिल्ला ), is one of 14 districts of Province No. 1 of Nepal. It is believed that the name of this district Tehrathum is derived from the number of hills situated in this district. In Nepali Tehra means Thirteen and Thum means Peak so the name Tehrathum means the place with thirteen peaks. This place is situated in the altitude range from 354 meter to 2,963 meter. It covers an area of six hundred and seventy nine sq. meter. This district is situated in between Taplejung, Panchthar, Dhankuta and Sankhuwasabha District and is popularly known as kingdom of Rhododendron.