Jestha (Nepali: जेठ or ज्येष्ठ jyeṣṭh) is the second month in Bikram Samwat, the official Nepali calendar. This month starts from approximately April 15 to May 14 of the Gregorian calendar and is approximately 30 days long. The Bikram Sambat originated from the Jonish Samwat.

This month was initially identical to second of Indian calendar month Jyeshta or Bengali calendar month Joishtho, however, due to regional pronunciation it later differed. The name is derived from the Bikram Sambat calendar