Pai or PAI may refer to: People Pai (surname), Indian surname from coastal Karnataka and Goa plus people with the name Pai (Chinese surname), includes Chinese name origin, plus people with the name Fictional characters Pai (Manga character), a character from "3x3 Eyes" Pie (Tokyo Mew Mew), a villain from the manga and anime series Tokyo Mew Mew Places Pai, Iran, a village in Isfahan Province Pai, Thailand, a small town in Mae Hong Son Province Pai District, the district around the town Pai River Pai Airport Pai, Tank, a union council in Pakistan Pai Northern Thai Kitchen, a restaurant chain in Toronto, Canada Games Gwat Pai, Chinese dominoes set Zi pai, Chinese card game Pai Gow, Chinese gambling game Pai gow poker, Americanized version Other uses Pai languages (Paipai, Walapai, Havasupai) Pai dialect of the Northern Sotho language Pai (fish trap) "Pai", a 2016 song by Bad Gyal Acronyms PAI Partners, a French private equity firm PAI (Personal Activity Intelligence), a fitness indicator developed by researcher Ulrik Wisløff Parachute Association of Ireland, a representative/regulatory body for skydivers in Ireland Parti Africain de l’Indépendance (African Independence Party), a former political party in Bourkina Faso PartnerAid International, a German-based Christian humanitarian organization Pathogenicity island, a distinct class of genomic island which is acquired by horizontal transfer Periodic annual increment Persatuan Arab Indonesia, an association of Arab Indonesians Personality Assessment Inventory, a test given by psychologists Photoacoustic imaging Plasminogen activator inhibitor-1 (PAI-1), a protein that inhibits fibrinolysis (breakdown of blood clots) Plasminogen activator inhibitor-2 (PAI-2), another protein that inhibits fibrinolysis Poalei Agudat Yisrael, an Israeli political party Polizia dell'Africa Italiana (Italian Police of Africa, police force in the Italian colonies Polyamide-imide, a thermoplastic polymer Polyatomic ion Population Action International Primary adrenal insufficiency (primary adrenocortical insufficiency), that is, Addison's disease, a rare endocrine disorder Public Accountability Initiative See also Bae (surname)