Nisi may refer to:
Languages Nisi language (India) (or Nishi), a subject–object–verb and Sino-Tibetan language of the Tani branch Nisi language (China), a Sino-Tibetan language, still unclassified within branches of Southeastern Loloish (or Ngwi) languages Nisi Kham language, a dialect of a complex of Sino-Tibetan Magaric languages
People Given name Nisi Shawl (born 1955), African-American writer and journalist Nisi Mac Niata (6th century), Irish Gael whose death is described in the Book of Fenagh Nisi ben Menasseh, 9th-century Khazar ruler
Surname Aaron ben Nisi, Turkic Jewish ruler of the Khazars mentioned in the Khazar Correspondence Ana Nisi Goyco (1950–2019), Puerto Rican politician and pharmacist Nisi ben Menasseh (or Nisi ben Moses), Jewish Turkic ruler of the Khazars mentioned in the Khazar Correspondence Nisi Yosiyuki (born 1976), Japanese manga artist Nisio Isin (born 1981), stylized NisiOisin, Japanese novelist and manga writer
Places Greece Nisi, Elis, a village and a community in the municipal unit of Vouprasia Nisi, Grevena, a village part of the community of Kentro Nisi, Imathia, a settlement in Imathia Nisi, Pella, a settlement in the Pella regional unit
Other places Albu Nisi, a village in Elhayi Rural District, Khuzestan Province, Iran Hajj Hasan Nisi Pumping Station, a village and company town in Hoveyzeh Rural District, Khuzestan Province, Iran Nishitokyo, a city in Tokyo Metropolis, Japan Nisi, Nepal, a village development committee in Baglung District in the Dhaulagiri Zone
Other uses Asa Nisi Masa, iconic phrase used during a key scene in Federico Fellini's 1963 film 8½ Decree nisi, a ruling by a court that does not have any force until such time that a particular condition is met "Nisi sam" (Your Light), a 2014 song by Slovenian preteen singer Ula Ložar