For or FOR may refer to:
English language
- For, a preposition
- For, a complementizer
- For, a grammatical conjunction
Science and technology
- Fornax, a constellation
- for loop, a programming language statement
- Frame of reference, in physics
- Field of regard, in optoelectronics
Other uses
- Fellowship of Reconciliation, a number of religious nonviolent organizations
- Pinto Martins International Airport (IATA airport code), an airport in Brazil
- Revolutionary Workers Ferment (Fomento Obrero Revolucionario), a small left communist international
- Fast oil recovery, systems to remove an oil spill from a wrecked ship
- Field of Research, a component of the Australian and New Zealand Standard Research Classification