TFL or TfL may refer to:
Businesses and organisations
- Transport for London (TfL), an English public transport body
- TfL Rail, a former London rail service
- Trees for Life (disambiguation), several reforesting charities
- TUI fly Netherlands, a Dutch airline (ICAO:<code>TFL</code>)
Sport
- Tackle for loss, a gridiron football defensive play
- Tasmanian Football League, an Australian rules competition
Science, medicine and technology
- Tensor fasciae latae muscle, a thigh/hip muscle
- Terry Fox Laboratory, a unit of BC Cancer Agency, Canada
- Thermally fused laminate, or thermally fused melamine, a material
- Transient friction loading, vibrational mechanical stress
Other uses
- Tyskarna från Lund, a Swedish synthpop band
- "True forced loneliness", a term used by incels