For

For or FOR may refer to:

• For, a preposition
• For, a complementizer
• For, a grammatical conjunction

• Fornax, a constellation
• for loop, a programming language statement
• Frame of reference, in physics
• Field of regard, in optoelectronics
• Forced outage rate, in reliability engineering

• Fellowship of Reconciliation, a number of religious nonviolent organizations
• Fortaleza 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
• FOR, free on rail, a historic form of international commercial term or Incoterms
• "For", a song by Dreamcatcher from , 2022

• 4 (disambiguation)