Pif or PIF may refer to:
- Paid in full (disambiguation)
- Palestine Investment Fund
- Panellinios IF
- Pargas Idrottsförening
- Partners in Flight
- Pay it forward (disambiguation)
- Pingtung Airport (IATA code: PIF)
- Pooled income fund
- Pusan International Forum (PIF)
Government and politics
- Pacific Islands Forum
- Presidential Innovation Fellows
- Punjab Irregular Force
- Liberation Front of the Slovene Nation, also known as the Anti-Imperialist Front (Slovene: Protiimperialistična fronta)
- Public Investment Fund, Saudi Arabia's sovereign wealth fund
Popular culture
- P.I.F. (band), a Bulgarian rock band
- Pif (television host), Italian television host named Pierfrancesco Diliberto
- Pif le chien, a French comic strip character
- Pif gadget, a French monthly comics magazine formed around the above character
- Public information film, a series of government commissioned short films
Science, engineering and technology
- Path integral formulation, an approach to quantum mechanics
- PCF Interframe Space
- Pingelapese language
- Powder infant formula
- Poznań International Fair
- Pressure-injected footing
- Program information file
- Prolactin inhibiting factor
- Proteolysis-inducing factor