Pishva (, also Romanized as Pīshvā, Pīchvā, and Pīshvah; also known as Emāmzādeh Ja‘far and Pīshyān) is a city in and the capital of Pishva County, Tehran Province, Iran. At the 2006 census, its population was 41,480, in 10,734 families.
The older names of the city were Samenat and later Emamzadeh-Ja'far. The residents of Pishva are mainly Persian-speaking Shias and are predominantly descendants of the original residents of the Tehran and Ray area. Members of the Joneidi clan are the most prominent residents of the town. In Persian the word Pishva means Imam and leader and refers to the mausoleum of Imamzadeh Ja'far, who is considered the son of the seventh Shi'ite Imam, Imam Mousa Al-Kazim.