PLF may stand for:
Science and technology
- Payload fairing
- Plant Load Factor
Organisations
- Pacific Legal Foundation
- Palestinian Liberation Front
- Patrick Leigh Fermor
- Phil Lesh and Friends
- Popular Liberation Forces
- Pretty Lights Family
- The Princess Louise Fusiliers
Transport
- Pala Airport, Chad (by IATA code)
- Passenger load factor
- Passenger locator form
Other
- Premium large format theater, a type of auditorium with higher-end amenities
- Central Malayo-Polynesian languages (by ISO 639 code)
- Parachute landing fall
- Precision livestock farming