Pai

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

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 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